Which organelle does the tonoplast surround?
Correct answer: D. Vacuoles
- A. Golgi complex
- B. Nucleus
- C. Endoplasmic reticulum
- D. Vacuoles
Explanation
Vacuole is single membrane bounded organelle. This single membrane is known as tonoplast. The tonoplast is the membrane that surrounds the vacuole in plant cells. It is a single membrane that is made up of phospholipids and proteins. The proteins in the tonoplast membrane are involved in a variety of functions, including: Transport of ions and molecules into and out of the vacuole: The tonoplast membrane is selectively permeable, which means that it allows some molecules to pass through it while blocking others. This selective permeability is important for maintaining the concentration of ions and molecules inside the vacuole.Storage of water: The vacuole is a large organelle that stores water. The tonoplast membrane helps to regulate the amount of water in the vacuole by controlling the movement of water in and out of the vacuole.Turgor pressure: Turgor pressure is the pressure that is exerted by the water in the vacuole against the cell wall. The tonoplast membrane helps to maintain turgor pressure by regulating the amount of water in the vacuole.
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About Cell Structure and Function
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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