THE CELL
TRANSPORT INTO AND OUT OF THE CELL
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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It allows them to take in materials without using energy.
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It allows them to reproduce.
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It allows them to absorb sunlight.
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It allows cells to use all energy.
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Detailed explanation-1: -Hence while osmosis helps the plants in absorbing water and other liquids, diffusion helps other molecules to pass through and hence both facilitate the photosynthesis process. Both processes help plants to create energy and other important nutrients.
Detailed explanation-2: -Diffusion and osmosis are crucial for cells as they help in balancing the cellular forces present within the cells. They play an essential role in absorption of nutrients by the cells to gain their nourishment.
Detailed explanation-3: -Both diffusion and osmosis do not require energy because the substances move down the concentration gradient, from high to low concentration. The net flow of the substances is caused by random movement of the substances owing to the energy level of the substances.
Detailed explanation-4: -The selective permeability of biological membranes to small molecules allows the cell to control and maintain its internal composition. Only small uncharged molecules can diffuse freely through phospholipid bilayers (Figure 2.49).