JAMB 2015 Biology · Question 53

One of these is present in both plant and animal cell?

Options

  1. A.Cell membrane
  2. B.Cell wall
  3. C.Chloroplast
  4. D.Large cell vacuole

Answer: A. Cell membrane

Explanation written with AI and checked against the answer key

Step 1: Analyze the question You are asked to find the structure found in BOTH plant cells and animal cells.

Step 2: Explain the concept Plant and animal cells are both eukaryotic, so they share many organelles. They also differ in some key ways:

| Structure | Plant cell | Animal cell | |---|---|---| | Cell membrane | Yes | Yes | | Cell wall (cellulose) | Yes | No | | Chloroplast | Yes | No | | Large central vacuole | Yes | No (only small, temporary vacuoles) | | Nucleus, mitochondria, ribosomes, cytoplasm | Yes | Yes |

Step 3: Go through the options

  • A. Cell membrane: Present in all living cells, both plant and animal. It controls what enters and leaves the cell. ✔
  • B. Cell wall: Found only in plant cells (made of cellulose), so it is not shared.
  • C. Chloroplast: Found only in plant cells (and some algae), where photosynthesis takes place. It is absent in animal cells.
  • D. Large cell vacuole: A large permanent vacuole is a plant feature. Animal cells have only small, temporary vacuoles.

Step 4: Answer The cell membrane is the only structure listed that is present in both plant and animal cells.

Exam tip: Remember the plant-only features with the phrase "WCV": Wall, Chloroplast, Vacuole (large). Anything not on that list, such as the membrane, nucleus, mitochondria or cytoplasm, is usually shared. When a question asks what is in both cell types, choose the structure that is not in the WCV list.

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