The outer most living boundary of the cell is:
Correct answer: B. Cell membrane
- A. Cell wall
- B. Cell membrane
- C. Cytoplasm
- D. Nuclear membrane
Explanation
The plasma membrane of all cells represents the universal boundary between the cell and its surroundings. It is the outermost insulation of the animal cells as it is elastic and the property of semipermeable membrane helps control what enters and exits the cell. Students can get confused with cell wall but it should be remembered that cell wall is non-living.
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About Animal and Plant Cell
Animal and plant cells share a plasma membrane, cytoplasm, nucleus, ribosomes, mitochondria and endoplasmic reticulum, but plant cells also have a cellulose cell wall, chloroplasts and a large permanent vacuole. Questions cover organelle structure and function, differences between the two cell types, and how membranes control movement of substances.
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