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Which of the following pairs ofthe cell structures are important for determining the movement of molecules in or out of the plant cell?
- a)Tonoplast + Vacuolar membrane
- b)Tonoplast + Cell membrane
- c)Cell wall + Cell membrane
- d)Cell wall + Tonoplast
Correct answer is option 'C'. Can you explain this answer?
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Which of the following pairs ofthe cell structures are important for d...
Cell wall and cell membrane are the cellular structures which play an important role in determining the movement of molecules in or out of the plant cell. Cell wall is the rigid layer lying outside the plasma membrane of the cells of plants, fungi, and bacteria. In the algae and higher plants, it mainly consists of cellulose. Cell membrane, composed of lipids and proteins, is the semipermeable membrane which surrounds the cytoplasm.
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Which of the following pairs ofthe cell structures are important for d...
Cell structures important for determining the movement of molecules in or out of plant cell:
1. Cell wall:
- A rigid layer that surrounds the cell membrane.
- Helps in maintaining the cell shape and providing mechanical support.
- It is semi-permeable, which means it allows certain molecules to pass through it while restricting the movement of others.
2. Cell membrane:
- A thin layer that surrounds the cytoplasm of the cell.
- Regulates the movement of molecules in and out of the cell.
- It is selectively permeable, which means it allows certain molecules to pass through it while blocking others.
Explanation:
The movement of molecules in or out of the plant cell is determined by the cell wall and the cell membrane. The cell wall provides mechanical support and restricts the movement of molecules, while the cell membrane regulates the movement of molecules in and out of the cell.
Option C is the correct answer as it includes the two structures that are important for determining the movement of molecules in or out of the plant cell, i.e., the cell wall and the cell membrane. The tonoplast is a membrane-bound organelle present in plant cells that surrounds the vacuole and is responsible for regulating the movement of molecules in and out of the vacuole. The vacuolar membrane, on the other hand, is a part of the tonoplast and is not directly involved in determining the movement of molecules in or out of the plant cell.
1. Cell wall:
- A rigid layer that surrounds the cell membrane.
- Helps in maintaining the cell shape and providing mechanical support.
- It is semi-permeable, which means it allows certain molecules to pass through it while restricting the movement of others.
2. Cell membrane:
- A thin layer that surrounds the cytoplasm of the cell.
- Regulates the movement of molecules in and out of the cell.
- It is selectively permeable, which means it allows certain molecules to pass through it while blocking others.
Explanation:
The movement of molecules in or out of the plant cell is determined by the cell wall and the cell membrane. The cell wall provides mechanical support and restricts the movement of molecules, while the cell membrane regulates the movement of molecules in and out of the cell.
Option C is the correct answer as it includes the two structures that are important for determining the movement of molecules in or out of the plant cell, i.e., the cell wall and the cell membrane. The tonoplast is a membrane-bound organelle present in plant cells that surrounds the vacuole and is responsible for regulating the movement of molecules in and out of the vacuole. The vacuolar membrane, on the other hand, is a part of the tonoplast and is not directly involved in determining the movement of molecules in or out of the plant cell.
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Which of the following pairs ofthe cell structures are important for d...
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Which of the following pairs ofthe cell structures are important for determining the movement of molecules in or out of the plant cell?a)Tonoplast + Vacuolar membraneb)Tonoplast + Cell membranec)Cell wall + Cell membraned)Cell wall + TonoplastCorrect answer is option 'C'. Can you explain this answer?
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