Vacuoles are fluid filled sacs surrounded by a membrane called__________?
Correct answer: A. tonoplast
- A. tonoplast
- B. nuclear membrane
- C. cell membrane
- D. cell wall
Explanation
The tonoplast is the selectively permeable membrane surrounding a plant-cell vacuole and controlling movement of substances into and out of its fluid contents. The cell membrane surrounds the entire cell, whereas the nuclear membrane surrounds the nucleus, so neither is the vacuole membrane.
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About Cytoplasmic Organelles
Cytoplasmic organelles are the specialized structures suspended in cytoplasm, including mitochondria, ribosomes, endoplasmic reticulum, Golgi apparatus, lysosomes, vacuoles and centrosomes. Questions compare their structures and functions in animal and plant cells, including chloroplasts and the role of the endomembrane system in transport and secretion.
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