JAMB UTME - Biology - 2022
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During mitosis, the stage at which chromosomes lines up around the equator is?
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sources of air pollutants are?
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The beak structure of the organism is best adapted for?
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The feeding relationship that exists between a tick and a cow is?
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The organism above is?
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Volvox is a genus of green algae containing around 20 species of freshwater algae. Thousands of cells together form colonies. There are around 500 to 60,000 cells in each colony of volvox. Leeuwenhoek was the first scientist to observe them in 1700. Volvox is widely studied to understand the process of morphogenesis.
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AB positive blood type is known as the “universal recipient” because AB positive patients can receive red blood cells from all blood types.
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The part labelled II is?
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An adaptation for defense in animals is?
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The correct answer is: red blood cells, white blood cells, plasma and platelets. Blood is a complex fluid that is made up of different components, each with a specific function.
- Red blood cells (also called erythrocytes) are responsible for carrying oxygen from the lungs to the rest of the body. They have a biconcave shape that allows them to carry more oxygen and are flexible so they can move through the smallest blood vessels.
- White blood cells (also called leukocytes) are part of the body's immune system and help fight infections. There are different types of white blood cells, each with a specific function, such as identifying and destroying harmful bacteria and viruses.
- Plasma is the yellowish fluid part of blood that makes up about 55% of total blood volume. It contains water, proteins, hormones, and waste products. Plasma also helps to transport nutrients, hormones, and waste products throughout the body.
- Platelets (also called thrombocytes) are small, disc-shaped cells that play a crucial role in the formation of blood clots. When there is an injury or wound, platelets clump together to form a clot and stop bleeding.
So, red blood cells, white blood cells, plasma and platelets.
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Tall trees with buttress roots and evergreen leaves are characteristics features of?
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