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9 Cards in this Set
- Front
- Back
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what do most soft drinks contain? |
water, sugar and ions |
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why do sports drink contain sugars, water and ions? |
to replace the sugar used in exercise. they contain water and ions to replace the water and ions lost in sweating. |
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what happens if water and ion cells are not replaced? |
the ion/water balance f the body is disturbed and the cells do not work efficiently |
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how care ions absorbed into cells from v. dilute solutions? |
active transport |
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how is the surface area of the lungs increased? |
alveoli |
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how is the surface area of the small intestine increased? |
villi |
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what do villi do |
provide a large SA w/ an extensive network of capillaries to absorb the products of digestion by diffusion and active transport. |
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How is air moved into the lungs? |
in: ribcage moves out and up and the diaphragm becomes flatter. |
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how do plants get their CO² ? |
enters leaves by diffusion. |
