digestion and absorption Flashcards

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1
Q

Suggest how a rabbit eating its own caecal droppings helps a rabbit’s digestion and absorption of dietary protein

A
  • more undigested protein broken down
  • more amino acids absorbed
  • because protein passes again through ileum
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2
Q

The action of carrier protein X (Na+/K+ pump) is linked to a membrane bound ATP hydrolase enzyme. Explain the function of this ATP hydrolase.

A
  • ATP hydrolysed into ADP + Pi releases energy
  • for active transport of Na+/K+ ions
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3
Q

The movement of Na+ out of the cell allows absorption of glucose into the cell lining the ileum
Explain how

A
  • Na+ conc gradient created
  • Na+ moving in by facilitated diffusion brings glucose with it
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4
Q

Use your knowledge of lipid digestion to explain why concentration of triglycerides decreased. Assume no absorption occurred.

A
  • decrease in triglycerides due to lipase action
  • decrease in triglycerides due to hydrolysis
  • decrease in triglycerides due to hydrolysis of ester bonds
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