LABORATORY REVIEW
DIFFUSION AND OSMOSIS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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They don’t really happen.
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They require some energy to occur.
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They require lots of energy to occur.
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They don’t require energy to occur.
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Detailed explanation-1: -Both diffusion and osmosis are passive transport processes, which means they do not require any input of extra energy to occur. In both diffusion and osmosis, particles move from an area of higher concentration to one of lower concentration.
Detailed explanation-2: -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-3: -Passive transport doesn’t require energy because molecule move from a compartment with a high concentration of the molecule to a lower concentration one. Therefore, the molecule naturally moves across the membrane driven by the concentration gradient.
Detailed explanation-4: -Passive transport does not require the cell to expend any energy and involves a substance diffusing down its concentration gradient across a membrane.
Detailed explanation-5: -Passive transport, most commonly by diffusion, occurs along a concentration gradient from high to low concentration. No energy is necessary for this mode of transport.