LABORATORY REVIEW
DIFFUSION AND OSMOSIS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The following are examples of diffusion except ____
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movement of carbon dioxide out of the stomata in the leaves
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movement of water into the root hair cell
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movement of oxygen from the alveoli into the capillaries
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movement of glucose from the small intestine into the capillaries of the villi
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Explanation:
Detailed explanation-1: -Remember that in diffusion, substances move down a concentration gradient, whereas in active transport, substances move against a concentration gradient. Because active transport moves ions against the concentration gradient into the root hair cells, energy is needed.
Detailed explanation-2: -Root hair cells Plants absorb water from the soil by osmosis. They absorb mineral ions by active transport, against the concentration gradient. Root hair cells are adapted for taking up water and mineral ions by having a large surface area to increase the rate of absorption.
There is 1 question to complete.