Which of the statement about cell membrane is not true?
Correct answer: C. It contains charged pores thus ions being charged particles cross cell membrance much easier than neutral particles.
- A. It contains protein molecules embedded in lipid bilayer
- B. It is a differentially permeable membrane.
- C. It contains charged pores thus ions being charged particles cross cell membrance much easier than neutral particles.
- D. It may get infolded to engulf solid or liquid material.
Explanation
The membrane is selectively permeable, contains embedded proteins, and can fold inward during endocytosis to engulf material. Statement c is false because ions generally cannot pass through the lipid bilayer easily; they require specific protein channels, whereas some small neutral molecules cross more readily. Students may choose b by confusing selective permeability with complete impermeability.
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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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