Which of the following terms is used to describe the membrane of central vacuole?
Correct answer: A. Tonoplast
- A. Tonoplast
- B. Myoplast
- C. Periplast
- D. Epi Tonoplast
Explanation
Option A: Tonoplast is the membrane that surrounds the central vacuole in plant cells. It is a single layer of phospholipids that is selectively permeable, allowing certain molecules to pass through while preventing others from doing so. This allows the central vacuole to maintain a different composition of solutes than the rest of the cell. Option B: Periplast is the outer membrane of a cell. It maintains the cell's shape and protects it from the environment. Option C: Myoplast is a term used to refer to the mitochondria in muscle cells. It produces energy for the cell. Option D: Epitonoplast is a non-existent term. There is no membrane that sits on top of the tonoplast.
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Animal, plant, prokaryotic and eukaryotic cells are compared through their membranes, cell walls, nuclei and cytoplasmic organelles. The work includes the structures and functions of mitochondria, chloroplasts, ribosomes, endoplasmic reticulum, Golgi apparatus and lysosomes, as well as chromosome organization and the distinction between chromatin and chromosomes.
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