JAMB UTME - Physical Education - 2023

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After digestion, proteins are converted into amino acids.
During the process of digestion, proteins are broken down into smaller molecules called peptides through the action of enzymes in the stomach and small intestine. These peptides are then further broken down by other enzymes into individual amino acids.
Amino acids are the building blocks of proteins and are crucial for various biological processes in the body. They are essential for the growth and repair of tissues, the synthesis of enzymes and hormones, and the functioning of the immune system.
Once proteins have been converted into amino acids, they can be absorbed into the bloodstream and transported to various cells in the body, where they are used to build new proteins or used as a source of energy.
Therefore, the correct answer is amino acid.

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Breaststroke: This is a swimming

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The first All Africa Games were held in 1965. These games were established by the African Union (AU) as a way to promote unity and solidarity among African nations.
The All Africa Games is a multi-sport event that brings together athletes from all over the African continent. It is held every four years, similar to the Olympic Games.
The purpose of these games is to encourage friendly competition and cooperation among African nations, while also providing a platform for athletes to showcase their talents on an international stage.
The first edition of the All Africa Games took place in Brazzaville, Congo, with athletes from 30 African countries participating in various sports disciplines. These sports included athletics, swimming, boxing, football, basketball, and more.
Since then, the All Africa Games have grown in size and popularity, with more African countries participating in each edition and new sports being added to the program. It has become an important event for African athletes to represent their countries and strive for sporting excellence.

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A sport where participants should have no means of contact is called non-contact games. In these games, players are not allowed to physically touch or tackle each other during gameplay. The objective is to avoid any physical contact with opponents, ensuring the safety and well-being of all players involved. The focus is on skill, strategy, and coordination rather than physical contact. Examples of non-contact games include tennis, badminton, swimming, and archery. These sports encourage fair competition and sportsmanship without risking injuries that can occur in contact sports.

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The first modern Olympic Games were held in 1896. These games marked the revival of the ancient Greek tradition of hosting athletic competitions. The idea behind the modern Olympics was to promote peace and goodwill among nations through sports.
The Olympic Games were first organized by a French nobleman named Pierre de Coubertin. He believed that sports could bring people from different countries together and promote understanding and friendship.
The city of Athens, Greece was chosen as the host for the inaugural modern Olympic Games. This was a significant choice because it was in Greece where the ancient Olympics were held for centuries.
The first modern Olympics brought together athletes from 14 different countries to compete in various sporting events. The games included events such as athletics, cycling, swimming, and gymnastics.
The opening ceremony of the 1896 Olympics was a simple affair compared to the elaborate ceremonies we see today. It took place in the Panathenaic Stadium, a venue with historical significance dating back to ancient times.
The Olympic Games have been held every four years since 1896, with a few interruptions due to world wars. They have grown in scale and popularity over the years, becoming one of the most prestigious sporting events in the world.
In conclusion, the first modern Olympic Games were held in 1896 in Athens, Greece. These games marked the revival of the ancient Greek tradition and aimed to promote peace and goodwill among nations through sports.

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Stomach ache is not typically considered an injury that can be sustained in sports. While it is common to experience stomach discomfort or cramps during physical activities, it is generally caused by factors such as dehydration, improper nutrition, or digestive issues rather than a direct injury to the body.
In contrast, sprains, bruises, and strains are types of injuries that can occur in sports:
- Sprains occur when ligaments, which connect bones together, are stretched or torn. This can happen when a joint is forcefully twisted or bent beyond its normal range of motion. Common areas for sprains include the ankle, wrist, or knee.
- Bruises, also known as contusions, result from a direct blow to the body. When tiny blood vessels under the skin get damaged, blood leaks out and causes discoloration, swelling, and tenderness. Bruises can occur in various body parts depending on the impact during sports.
- Strains are injuries to muscles or tendons. They typically occur due to overstretching or overexertion of the affected tissues. Strains commonly happen in areas like the hamstring, calf muscles, or lower back.
It is important to note that while stomach aches may not be considered an injury, they should not be ignored. It is crucial to address any persistent or severe stomach discomfort during physical activity by seeking medical advice and taking appropriate measures such as staying hydrated, consuming balanced meals, and avoiding excessive exertion.

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The swimming stroke that is not listed among the options is the downstroke.

Let's briefly discuss the other three swimming strokes to understand why the downstroke is not considered a swimming stroke:

Crawl: Also known as freestyle, the crawl is the fastest and most commonly used stroke in competitive swimming. It involves a continuous alternating arm motion and a flutter kick. Swimmers move their arms in a windmill-like pattern, pulling the water towards them, while their legs kick in a repetitive up and down motion.

Backstroke: As the name suggests, swimmers swim on their backs, facing up. The main propulsive force in backstroke comes from the alternating arm movement, similar to the crawl stroke. The arms move in a wider arc, and the hands enter the water pinky-first. The legs perform a flutter kick, similar to that of the crawl stroke.

Breaststroke: The breaststroke is the slowest of the four competitive swimming strokes, but it is often considered the most graceful. Swimmers synchronize a frog-like kick and an arm pull to propel themselves through the water. The arms move together in a half-circle motion underwater, while the legs kick outwards and then back inwards simultaneously.

Downstroke: The term "downstroke" does not correspond to any recognized swimming stroke. It may be a term used in other contexts or in certain swimming drills, but it is not a distinct swimming stroke like the crawl, backstroke, or breaststroke.

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Track events are done on a running track.
A running track is a specially designed surface that is used for various athletic events, including track and field competitions. It is typically made of a synthetic material, such as rubber or synthetic fibers, to provide a springy and comfortable surface for athletes to run on.
The track is marked with lanes for each runner, usually six to eight lanes, to ensure fairness in races. These lanes are usually marked with different colors to make it easier for spectators and athletes to identify them.
The surface of the track is specifically designed to offer good traction and reduce the risk of slipping or falling during the race. It also helps to absorb the impact of each step, minimizing the strain on the athletes' joints and muscles.
In addition to running events, a running track is also used for other track and field events, such as long jump, triple jump, high jump, and pole vault. The track provides a clear and standardized area for these events to take place, with designated markings and zones for each discipline.
Overall, a running track provides a controlled and professional setting for track events, ensuring fairness, safety, and optimal performance for athletes.

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The objective of physical education is to promote overall well-being and enhance various aspects of an individual's life through physical activities. It aims to improve physical fitness, develop the habit of sportsmanship, and enhance emotional stability. However, **"To be able to bully people"** is not an objective of physical education. Physical education focuses on teaching students about the importance of physical health and well-being. It aims to help students develop and maintain a healthy lifestyle by engaging in regular physical activities. Through physical education, students learn about the importance of physical fitness, including cardiovascular and muscular endurance, flexibility, and strength. Another objective of physical education is to develop the habit of sportsmanship. This includes teaching students about fair play, teamwork, and respect for others. Sportsmanship encourages students to compete with integrity, showing respect for their opponents and abiding by the rules of the game. It promotes values such as cooperation, discipline, and fair competition. Additionally, physical education plays a role in developing emotional stability. Engaging in physical activities can help students manage stress, improve their mood, and develop a positive mindset. Physical education classes often include activities that promote relaxation, stress reduction, and mental well-being. However, **"To be able to bully people"** does not align with the objectives of physical education. Bullying goes against the principles of sportsmanship and personal well-being. Physical education aims to create a safe and inclusive environment where all students can participate and enjoy physical activities without fear or intimidation. In conclusion, physical education objectives focus on developing physical fitness, promoting sportsmanship, and enhancing emotional stability. It does not aim to encourage or support bullying behavior, as the well-being and respect for others are fundamental principles of physical education.

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The traditional game in Nigeria before colonization is the ayo game. Ayo game is a popular Mancala game played by many tribes across Nigeria. It is a board game where players take turns picking up seeds from small pits and sowing them in other pits, trying to capture as many seeds as possible. In the ayo game, each player uses a wooden board with several small pits dug into it. These pits are filled with seeds or beads. The goal of the game is to capture as many seeds as possible from your opponent's side. Players take turns and strategically sow the seeds from one pit to another in a clockwise direction. They can capture seeds when the last seed sown ends up in an empty pit on their side. Ayo game is not only a fun pastime but also a cultural game that has been played for generations in Nigeria. It is a game that helps enhance strategic thinking, concentration, and mathematical skills. Overall, ayo game is a traditional and beloved game in Nigeria that has stood the test of time and continues to be enjoyed by people of all ages.

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Kicking is not a skill and technique in boxing. Boxing is a combat sport that involves using punches and defensive techniques inside a ring. The objective is to score points by landing clean and powerful punches on the opponent while avoiding getting hit. The sport is strictly limited to the use of the hands only, which means that kicking is not allowed in boxing. Here is a breakdown of the other options: - **Dodging**: Dodging is a crucial skill in boxing. It involves moving the body and head to avoid incoming punches from the opponent. By dodging, a boxer can evade punches and minimize the chances of getting hit. - **Ducking**: Ducking is another defensive technique used in boxing. It involves bending the knees and lowering the body to avoid an opponent's punch, primarily aimed at the head. By ducking, a boxer can create space and avoid getting struck by an incoming punch. - **Jabbing**: Jabbing is a basic and essential technique in boxing. It is a quick, straight punch thrown with the front hand, usually the non-dominant hand. Jabs are used to set up combinations, keep the opponent at bay, and score points in boxing matches. In summary, while dodging, ducking, and jabbing are fundamental skills and techniques in boxing, kicking is not permitted in this sport. Boxing relies solely on punches and defensive maneuvers using the hands.

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To win a game in badminton, a player or a team needs to score a certain number of points. The number of points required to win a badminton game is 21 points.
However, there are certain rules that need to be followed in order to determine the winner. The winner must also have a 2-point lead over their opponent to secure the victory.
Let me explain the scoring system more in detail. In badminton, each rally results in a point being awarded to one of the players or teams. The rally starts with a serve and ends when the shuttlecock hits the ground within the boundaries, or if a fault is committed by one of the players.
Regardless of who served, a point is awarded to the serving side every time they win a rally. If the serving side loses a rally, the serve will be handed over to the opposing side, and they will have an opportunity to score points.
The game is played until one player or team reaches 21 points, with a 2-point lead. If the score reaches a tie at 20-20, it is called a "deuce". In a deuce, players need to continue playing until a player or team gains a 2-point lead to win the game.
In summary, to win a badminton game, a player or team needs to score 21 points with a 2-point lead over the opponent.

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The organ that is not part of the alimentary canal is the skin.
The alimentary canal is a long tube-like structure in our body that is responsible for the process of digestion. It begins at the mouth and ends at the anus. The purpose of the alimentary canal is to break down the food we eat into smaller, absorbable molecules that our body can use for energy, growth, and repair.
The organs that make up the alimentary canal include the mouth, esophagus, stomach, small intestine (which consists of the duodenum, jejunum, and ileum), and large intestine (which consists of the colon and rectum). These organs work together to digest and absorb nutrients from the food we consume.
However, the skin is not part of the alimentary canal. The skin is the outer covering of our body and serves as a protective barrier against the external environment. It plays a crucial role in regulating body temperature, preventing water loss, and protecting our internal organs from injury and infections. While the skin is important for our overall health and well-being, it is not involved in the digestion process like the organs of the alimentary canal are.
In summary, the skin is not part of the alimentary canal because it is not involved in the process of digestion. The alimentary canal consists of organs such as the mouth, esophagus, stomach, small intestine, and large intestine, which work together to break down and absorb nutrients from the food we eat.

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The correct answer that helps human sperm with locomotion is the flagellum. The flagellum is a long, whip-like structure that is present in the sperm. It is responsible for the movement of the sperm through various fluids in order to reach and fertilize the egg.
The flagellum is composed of microtubules, which are tiny structures that give it its shape and strength. These microtubules are arranged in a pattern that allows the flagellum to move in a whip-like motion. This motion propels the sperm forward, allowing it to swim through the female reproductive tract towards the egg.
The movement of the flagellum is powered by a complex biochemical process. Inside the flagellum, there are structures called dynein arms. These dynein arms use energy from ATP molecules to move and bend the microtubules, causing the flagellum to move in a coordinated manner.
The flagellum is essential for the sperm's ability to swim and reach the egg for fertilization. Without a functional flagellum, the sperm would not be able to move effectively and would have a much lower chance of successfully fertilizing an egg.
In summary, the flagellum is the structure in human sperm that helps with locomotion. Its whip-like motion, powered by dynein arms and ATP, allows the sperm to swim towards the egg for fertilization.

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Pole vault is not a throw event. It is a field event in athletics where a person uses a long, flexible pole (which today is usually made either of fiberglass or carbon fiber) as an aid to jump over a bar. Javelin throw, shot put, and hammer throw are all throw events.

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A track event is a type of competition that involves running, jumping, or throwing on an oval-shaped track. Out of the given options, the track event is the 100m race.
The triple jump and high jump are both field events, rather than track events. The triple jump is a jumping event that involves three consecutive phases: the hop, the step, and the jump. Athletes aim to jump as far as possible in one single attempt.
Similarly, the high jump is also a jumping event. Athletes try to leap over a horizontal bar set at a specific height without knocking it down. The higher the bar, the greater the difficulty.
The pole vault, on the other hand, involves using a long, flexible pole to propel oneself over a horizontal bar. Athletes sprint down a runway, plant the pole in a specially designed box, and use it to propel themselves over the bar.
In summary, the 100m race is the track event among the given options. It is a sprinting event where athletes compete to be the fastest over a distance of 100 meters.

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Harding James Ekperigin is widely recognized as the father of physical education in Nigeria. He made significant contributions to the development and promotion of physical education in the country.

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Hyaline cartilage is the type of cartilage present at the joints of long bones in humans. It provides a smooth surface for joint movement, absorbs shock, and reduces friction. Fibrous and elastic cartilages are found in other parts of the body, while calcified cartilage is a stage in endochondral ossification, not a type of cartilage found in joints

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One of the options in the list that is an indoor game is chess.
Chess is a strategic board game that is played between two players. It is typically played indoors on a square board consisting of 64 squares of alternating colors. The objective of the game is to checkmate the opponent's king, which means putting the opponent's king in a position where it is under immediate attack and cannot escape capture.
Chess is considered an indoor game because it is typically played in a controlled environment, such as indoors at home, in schools, or in chess clubs. The game requires a calm and quiet setting, as players need to concentrate, think ahead, and plan their moves strategically.
Unlike outdoor games such as sprinting, soccer, and swimming, which require physical activity and are played in open spaces, chess is a mental and intellectual game that can be enjoyed indoors. It can be played at any time, independent of weather conditions. Chess also promotes critical thinking, problem-solving, and decision-making skills, making it a popular choice for intellectual stimulation and competition.
In summary, chess is an indoor game because it is played on a board, requires mental effort, and is typically enjoyed in a controlled environment, providing an opportunity for strategic thinking and intellectual engagement.

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A person who performs gymnastics is called a gymnast.
Gymnastics is a physical activity that combines strength, flexibility, balance, and control. Gymnasts are individuals who participate in this sport and perform various movements and routines on different apparatus such as the balance beam, uneven bars, vault, and floor exercise. They go through extensive training to learn and perfect these movements which include flips, twists, jumps, and handstands.
Gymnasts are skilled athletes who showcase their abilities and talents through their performances. They compete in gymnastics competitions or sometimes perform for entertainment purposes. They demonstrate their agility, coordination, and strength while executing complex and acrobatic movements.
So, the correct term to describe a person who performs gymnastics is a gymnast.

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The type of hazardous pollution caused by automobiles is carbon monoxide.
When we drive cars, they burn gasoline or diesel fuel to produce energy that moves the car. However, this burning process also produces harmful gases as byproducts. One of these gases is carbon monoxide (CO).
Carbon monoxide is a colorless, odorless gas that is very harmful to humans and the environment. It is produced when there is not enough oxygen during the burning process, which is common in the engines of cars.
When we inhale carbon monoxide, it binds to our red blood cells more easily than oxygen, reducing the amount of oxygen our body can carry. This can lead to serious health problems, especially for people with heart or lung conditions.
Additionally, carbon monoxide is a greenhouse gas that contributes to climate change. It traps heat in the atmosphere, leading to higher global temperatures and disrupting the natural balance of our planet.
In summary, the hazardous pollution caused by automobiles is carbon monoxide. It is harmful to both human health and the environment, making it important for us to find ways to reduce its emissions from vehicles.

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Fruits and vegetables are important for several reasons:

1. They give you energy: Fruits and vegetables are packed with carbohydrates, which are the body's main source of energy. They provide us with the fuel we need to go about our daily activities.

2. They are easily available: Fruits and vegetables are widely accessible in grocery stores, farmers' markets, and even in our own backyards. They are readily available, making it convenient for us to incorporate them into our diets.

3. They are colorful: Fruits and vegetables come in a wide array of vibrant colors such as red, orange, green, and purple. These colors are not just visually appealing, but they also indicate the presence of different nutrients and antioxidants that are essential for our health.

4. They provide you with a wide variety of vitamins, minerals, and nutrients: Fruits and vegetables are rich in vitamins, minerals, and nutrients that our bodies need to function properly. They are excellent sources of vitamin C, vitamin A, potassium, fiber, and folate, among others.

In conclusion, fruits and vegetables give us energy, are easily available, add color to our meals, and provide us with a wide range of essential vitamins, minerals, and nutrients. It is important to include them in our daily diet for overall health and wellbeing.

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The sport injury that results in the break of bone is called fracture.
A fracture occurs when there is a break in the continuity of a bone. This can happen as a result of a sports-related injury where there is a direct impact or excessive force applied to the bone. Fractures can vary in severity, ranging from a small crack to a complete break.
Unlike a sprain, which involves damage to the ligaments connecting bones, a fracture specifically refers to a break in the bone itself.
Similarly, a strain is an injury to the muscles or tendons, while a bruise is the result of damage to the blood vessels under the skin.
It is important to note that fractures require medical attention and proper treatment, which may involve immobilizing the affected area, using casts or splints, and in some cases, surgery. Prompt and appropriate management is crucial to ensure proper healing and minimize complications.

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The purpose of food is to provide energy, enhance growth, and eliminate hunger. However, increasing hunger is not a purpose of food. Rather, food is consumed to satisfy hunger and provide nourishment for our bodies.

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Health is a state of complete physical, mental and social well-being and not merely the absence of disease or infirmity.

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31 pairs of spinal nerves are located in the human body.

The spinal nerves are part of the peripheral nervous system, which is responsible for transmitting signals between the central nervous system (brain and spinal cord) and the rest of the body.

The nerves emerge from the spinal cord in the vertebral column and pass through spaces called intervertebral foramina to reach different parts of the body.

There are 31 pairs of spinal nerves in total:

- 8 pairs of cervical nerves (C1-C8): These emerge from the nekc area and supply signals to the neck, shoulders, arms, and hands.

- 12 pairs of thoracic nerves (T1-T12): These emerge from the upper back area and supply signals to the chest, abdomen, and back.

- 5 pairs of lumbar nerves (L1-L5): These emerge from the lower back area and supply signals to the lower back, buttocks, and legs.

- 5 pairs of sacral nerves (S1-S5): These emerge from the pelvis area and supply signals to the pelvis, genitals, and legs.

- 1 pair of coccygeal nerves: These emerge from the base of the spine and supply signals to the tailbone area.

Each pair of spinal nerves has a sensory component, which carries signals from the body to the spinal cord and a motor component, which carries signals from the spinal cord to the muscles and organs.

By having 31 pairs of spinal nerves, the human body is able to send and receive signals to and from every part of the body, allowing for movement, sensation, and control over bodily functions.

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Non-visual baton exchange is the type of baton exchange in which the receiver of the baton will not see as the baton is being placed in his/her hand.

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Ankle is known as tarsus in humans. It contains seven bones called tarsal's. It is arranged in three rows having gliding joints

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The international governing body responsible for soccer is FIFA. FIFA stands for the Fédération Internationale de Football Association. It is the organization that governs and regulates the sport of soccer on a global scale. FIFA is responsible for organizing international competitions such as the FIFA World Cup, which is held every four years and is considered the most prestigious tournament in soccer.
FIFA is in charge of creating and enforcing the rules and regulations of the game. They ensure fair play and provide guidance to national soccer associations and clubs. FIFA also works to develop and promote soccer at all levels, from grassroots to professional.
One of FIFA's important roles is to oversee the national soccer associations and ensure that they comply with the rules and principles of the game. They also promote the values of soccer, such as inclusivity, diversity, and respect.
In summary, FIFA is the international governing body for soccer, responsible for organizing competitions, creating rules, developing the sport, and maintaining its integrity globally.

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Paddles are not used in badminton games. Badminton is a racquet sport played using racquets to hit a shuttlecock across a net. The equipment used in badminton includes a racquet, shuttlecock, and strings for the racquet.

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An indoor recreational activity refers to an activity that can be enjoyed indoors, typically within a building or a closed space. Out of the given options, the only activity that can be considered as an indoor recreational activity is playing chess.
Swimming, hiking, and jogging all take place outdoors and require open spaces like pools, mountains, or parks. These activities involve physical movements in natural or outdoor environments. On the other hand, playing chess is an intellectual and strategic game that can be played indoors. It is usually played on a chessboard and involves planning and outwitting your opponent by moving different chess pieces on the board.
Playing chess can be enjoyed in the comfort of a home, a chess club, or any indoor space that provides a suitable environment to set up the chessboard and focus on the game. It does not require any specific physical fitness level or a large area, making it accessible to people of different ages and abilities.
In conclusion, playing chess is the only indoor recreational activity out of the options given. It is a mentally stimulating game that can be enjoyed indoors without the need for outdoor spaces or physical exertion.

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Saliva helps in the digestion of starch.
Starch is a carbohydrate that is found in foods like rice, potatoes, bread, and pasta. When we eat foods containing starch, our body needs to break it down into smaller molecules so that it can be absorbed and used for energy.
This is where saliva comes in! When we chew our food, our salivary glands produce saliva that contains an enzyme called amylase. Amylase is responsible for breaking down the starch molecules into smaller sugar molecules called glucose.
By breaking down starch, saliva helps to start the process of digestion and makes it easier for our body to absorb and utilize the energy from the food we eat.
Saliva doesn't directly help in the digestion of proteins, fats, or vitamins. These nutrients are broken down by different enzymes and processes in our digestive system.
In summary, saliva plays an important role in the digestion of starch by producing an enzyme called amylase that breaks down starch into smaller sugar molecules.

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A field event is a type of athletic competition that takes place in a designated area or field rather than on a track. It involves athletes competing in various events that require physical strength, skill, and technique.
Out of the options provided, javelin throw is the field event. In javelin throw, an athlete throws a long spear-like object called a javelin as far as possible within a marked area. The aim is to achieve the maximum distance with proper technique, accuracy, and strength.
On the other hand, hurdles race, 100m race, and relay race are all track events. In hurdles race, athletes run and jump over a series of hurdles placed at regular intervals on the track. The objective is to complete the race in the shortest possible time while clearing all the hurdles.
In a 100m race, athletes compete to run a distance of 100 meters in the fastest time possible, with the finish line being the determining factor.
A relay race involves a team of runners passing a baton from one runner to another, usually in a circular or linear track. The goal is to complete the race in the shortest time by efficiently transferring the baton between team members.
Therefore, among the options mentioned, only javelin throw can be categorized as a field event as it takes place in a designated area and requires throwing a javelin for distance.

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A fracture is a break, usually in a bone. If the broken bone punctures the skin, it is called an open or compound fracture.

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The external openings of the nasal cavity that admit air to the lungs are called nostrils.
The nostrils, also known as the nares, are the two openings at the base of the nose. They are responsible for allowing air to enter our respiratory system. When we breathe in, air flows through the nostrils and passes into the nasal cavity, which is a hollow space inside the nose.
The nostrils play an essential role in the respiratory process. As we inhale, the air enters the nasal cavity and is filtered, moistened, and warmed before it reaches the lungs. The nostrils are lined with small hairs called cilia, which help to filter out dust, pollen, and other particles from the air we breathe. The nose also contains mucus-secreting cells that moisten the air, preventing it from drying out the delicate lung tissues. Additionally, the nasal cavity has a rich blood supply, which helps to warm the air before it reaches the lungs, ensuring that it is at the right temperature for optimal breathing.
In summary, the nostrils are the external openings of the nasal cavity that allow air to enter the respiratory system. They filter, moisten, and warm the air, preparing it for the lungs to ensure efficient respiration.

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The assistant referees in a soccer game are also called linesmen.
These linesmen play a crucial role in assisting the main referee in making important decisions during the game. They are positioned along the sidelines of the field and their main responsibilities include:
1. Offside Decision: One key responsibility of the linesmen is to help the referee determine if a player is in an offside position. Offside is a rule in soccer that prevents players from being in a forward position and actively involved in play when the ball is played to them, unless there are enough defenders between them and the goal line. The linesmen use their position and judgement to raise their flag and notify the referee if they believe an offside has occurred.
2. Out of Play Decision: The linesmen also assist the referee in determining if the ball has gone out of play. This includes situations such as when the ball has fully crossed the sideline or the goal line. If the linesman sees the ball go out of play, they raise their flag to signal that the ball is no longer in play.
3. Fouls and Decisions: The linesmen also help the referee identify fouls and infringements that may have occurred during the match. They can communicate with the referee through subtle gestures or flag signals if they notice an infringement that the referee may have missed. This helps the referee make fair and accurate decisions.
4. Substitutions: The linesmen also assist in managing substitutions during the game. They keep track of the number of substitutions made by each team and inform the referee when a substitution is requested.
In summary, the linesmen are an essential part of the officiating team in a soccer match. They assist the referee in making important decisions regarding offside, out of play situations, fouls, and substitutions.

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In a gymnastic game, the officials play different roles to ensure fair and organized competition. Among the options provided, **lines men** is not an official in a gymnastic game. Here's an explanation of the roles of the other officials: - **Referee**: The referee is responsible for ensuring that the gymnastic game is conducted according to the rules and regulations. They oversee the overall conduct of the competition, including starting and ending the routines or exercises, making final decisions on rule violations, and handling any disputes or protests. - **Judges**: Judges play a crucial role in gymnastics competitions. Their primary task is to evaluate and score the performances of the gymnasts based on predefined criteria. They assess factors such as technique, difficulty, execution, artistry, and overall performance. The judges assign scores to each routine or exercise, which are used to determine the winners. - **Time keepers**: Time keepers, also known as time officials, are responsible for accurately measuring and recording the duration of each gymnast's routine or exercise. They ensure that the athletes adhere to the time limits specified for their respective routines. The timekeepers use timing devices, such as stopwatches or electronic timers, to track the durations. While all the other options mentioned—referee, judges, and time keepers—are important officials in gymnastics, **lines men** are not typically involved in gymnastic competitions. The term "lines men" is more commonly associated with sports such as soccer or rugby, where their role is to assist the referee by indicating when the ball has crossed the boundary lines of the field. In gymnastics, the focus is mainly on the gymnasts' performances and the evaluation by the judges.

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The institutional games in Nigeria are organized competitive events between universities or institutions. Three out of the four options given are actually institutional games in Nigeria, namely NATCEGA, NUGA, and NIPOGA.
NATCEGA stands for National Theatre Command Entertainment Games. It is an annual event that brings together theater command troops from various branches of the Nigerian military for friendly competitions in various sporting activities. This helps to foster camaraderie and promote physical fitness among the military personnel.
NUGA stands for Nigerian Universities Games Association. It is an annual multi-sport event that brings together universities from all over Nigeria to compete against each other in various sporting disciplines. The aim of NUGA is to promote sports development and healthy competition among university students.
NIPOGA stands for Nigerian Polytechnic Games. It is a biennial sporting event that brings together polytechnics and similar institutions in Nigeria for friendly competitions in different sports. NIPOGA provides an avenue for students and staff of polytechnics to showcase their sporting talents and promote healthy competition.
That leaves us with the NBA as the option that is not an institutional game in Nigeria. The NBA, or Nigerian Bar Association, is a professional association of lawyers and legal practitioners in Nigeria. While the NBA organizes conferences, workshops, and other professional events, it is not specifically focused on organizing sporting competitions among institutions or universities. Thus, the NBA is not an institutional game in Nigeria.

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Proteins are essential nutrients needed for the growth, repair, and maintenance of our body tissues. They are composed of smaller units called amino acids.
Out of the given options, rice is an example of a food that is not primarily a protein source. While rice does contain a small amount of protein, it is relatively low compared to the other options.
On the other hand, fish, egg, and beans are all excellent sources of protein. Fish, especially fatty fish like salmon, is rich in high-quality protein and also provides healthy omega-3 fatty acids. Eggs are considered a complete protein as they contain all the essential amino acids our body needs. Beans, including options like lentils, chickpeas, and black beans, are also great sources of protein, especially for those following a vegetarian or vegan diet.
To summarize, while fish, egg, and beans are examples of protein-rich foods, rice is not primarily known as a significant source of protein.

Answer Details

The medulla oblongata controls the breathing rate in humans. Medulla oblongata is a part of the brainstem that is responsible for many involuntary functions including breathing. It is located at the base of the brain, just above the spinal cord.
The medulla oblongata contains special cells called respiratory centers, specifically the dorsal respiratory group (DRG) and the ventral respiratory group (VRG). These centers detect the levels of carbon dioxide (CO2) and oxygen (O2) in the blood.
When the carbon dioxide levels in the blood increase, the DRG signals the muscles of the diaphragm and the ribcage to contract. This causes inhalation, allowing fresh oxygen to enter the lungs and carbon dioxide to be exhaled. On the other hand, when the carbon dioxide levels decrease, the DRG signals the muscles to relax, resulting in exhalation.
The medulla oblongata also communicates with the hypothalamus and the thalamus, but their roles are not directly related to controlling the breathing rate. The hypothalamus regulates body temperature, hunger, thirst, and other functions, while the thalamus is involved in relaying sensory information to the cerebral cortex.
The cerebellum, although important for coordination and balance, does not control the breathing rate.
In summary, the medulla oblongata is responsible for controlling the breathing rate in humans by detecting the levels of carbon dioxide in the blood and signaling the muscles involved in breathing to adjust accordingly.