Cell Structure
Muhtasari
Cut a thin slice of any plant or animal under a microscope and you see the same thing: thousands of tiny, box-like units called cells. Cells are the building blocks of every living thing, and each part inside a cell has a specific job, from the nucleus that controls the cell to the mitochondria that release its energy.
In this lesson you will compare plant, animal and bacterial cells, learn what each structure does, and see how some cells are specially shaped for one task. You will also learn how cells build up into tissues, organs, organ systems and finally the whole organism.
Malengo
- Describe and compare the structure of a plant cell with an animal cell, limited to: cell wall, cell membrane, nucleus, cytoplasm, chloroplasts, ribosomes, mitochondria, vacuoles
- Describe the structure of a bacterial cell, limited to: cell wall, cell membrane, cytoplasm, ribosomes, circular DNA, plasmids
- Identify the cell structures listed in
- Describe the functions of the structures listed in
- State that new cells are produced by division of existing cells
- State that specialised cells have specific functions, limited to: (a) ciliated cells - movement of mucus in the trachea and bronchi (b) root hair cells - absorption (c) palisade mesophyll cells - photosynthesis (d) neurones - conduction of electrical impulses (e) red blood cells - transport of oxygen (f) sperm and egg cells (gametes) - reproduction
- Describe the meaning of the terms: cell, tissue, organ, organ system and organism as illustrated by examples given in the syllabus
Maelezo ya Somo
Inapatikana kwenye programu ya Green Bridge
Pakua programu ya Green Bridge CBT kwenye simu yako au kompyuta yako ili kupata maelezo kamili ya masomo, maswali ya mazoezi, na mengi zaidi.
Tathmini ya Somo
Hongera kwa kukamilisha somo la Cell Structure. Sasa kwa kuwa umechunguza dhana na mawazo muhimu, ni wakati wa kuweka ujuzi wako kwa mtihani. Sehemu hii inatoa mazoezi mbalimbali maswali yaliyoundwa ili kuimarisha uelewaji wako na kukusaidia kupima ufahamu wako wa nyenzo.
Utakutana na mchanganyiko wa aina mbalimbali za maswali, ikiwemo maswali ya kuchagua jibu sahihi, maswali ya majibu mafupi, na maswali ya insha. Kila swali limebuniwa kwa umakini ili kupima vipengele tofauti vya maarifa yako na ujuzi wa kufikiri kwa makini.
Tumia sehemu hii ya tathmini kama fursa ya kuimarisha uelewa wako wa mada na kubaini maeneo yoyote ambapo unaweza kuhitaji kusoma zaidi. Usikatishwe tamaa na changamoto zozote utakazokutana nazo; badala yake, zitazame kama fursa za kukua na kuboresha.
- Which structure is found in a plant cell but NOT in an animal cell? A. nucleus B. cell membrane C. chloroplast D. mitochondrion Answer: C
- The site of aerobic respiration in a cell is the: A. nucleus B. ribosome C. mitochondrion D. vacuole Answer: C
- A bacterial cell stores its genetic material as: A. a nucleus B. chloroplasts C. circular DNA and plasmids D. a vacuole Answer: C
- Which level of organisation is a group of tissues working together? A. cell B. organ C. organ system D. organism Answer: B
- A red blood cell is adapted to carry oxygen because it: A. has a large nucleus B. has no nucleus and is full of haemoglobin C. contains chloroplasts D. has a cell wall Answer: B
Inapatikana kwenye programu ya Green Bridge
Pakua programu ya Green Bridge CBT kwenye simu yako au kompyuta yako ili kupata maelezo kamili ya masomo, maswali ya mazoezi, na mengi zaidi.
Inapatikana kwenye programu ya Green Bridge
Pakua programu ya Green Bridge CBT kwenye simu yako au kompyuta yako ili kupata maelezo kamili ya masomo, maswali ya mazoezi, na mengi zaidi.
Vitabu Vinavyopendekezwa
Fanya Mazoezi ya Maswali ya Majaribio
Ungependa kufanya mazoezi ya maswali ya majaribio kuhusu Cell Structure? Pakua programu ya Green Bridge CBT ili kupata maswali ya majaribio na tathmini kamili za mazoezi kuhusu mada hii.
Pakua Programu Kwenye Google Playstore
Kila kitu unachohitaji ili kufaulu katika JAMB, WAEC & NECO.
