6. Hexoses are transported from the cytosol of enterocytes into capillary circul

Question

6. Hexoses are transported from the cytosol of enterocytes into capillary circulation by a) Active transport b) Secondary active transport c) Facilitated diffusion d) Passive diffusion e) Osmosis 7. Scientists often classify molecules based on similarities in their chemical composition. For which of the following would developing a generalizable "formula" for chemical composition be most difficult? a) Proteins b) Carbohydrates c) Lipids d) Vitamins e) Fatty acids 8. Many bats and rodents feed on insects, but humans and rabbits generally do not. These dietary habits suggest that a) Humans and rabbits are strict herbivores. Many bats and rodents produce cellulase enzymes, but humans and rabbits do not. c) b) Many bats and rodents produce cellulase enzymes, but humans and rabbits do not. d) Many bats and rodents produce chitinase enzymes, but humans and rabbits do not. e) None of the above 9. Suppose an animal is fed a diet in which the only carbohydrate is glycogen. All of the animal's enzymes for digesting carbohydrates are disaccharidases digest? a) 0% b) 25% c) 50% d) 75% e) 100% drives the cotransport of glucose and galactose across the apical 10. Inward diffusion of membrane of epithelial cells in the vertebrate midgut a) ADP b) ATP c) K d) Na e) H20

Explanation / Answer

6c facilitated diffusion

7 d Vitamins. Vitamins vary widely in structure and hence cannot be given one general formula

8d Many bats and rodents produce chitinase but humans and rabits do not. The insect exoskeleton is made up of chitin and hence chtinase is the enzyme required for the digestion of this exoskeleton.

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