24. Which substance is a disaccharidase? a. Amylase b. Lactase c. Sucrose d. Fru

Question

24. Which substance is a disaccharidase? a. Amylase b. Lactase c. Sucrose d. Fructase 25. Which of the following cannot be absorbed by intestinal epithelial cells? a. polypeptides b. amino acids c Dipeptides d. Tripeptides 26. Saturated fatty acids are generally bad for human health. Based on the standard symbols describing fatty acids, which fatty acid is probably most detrimental? a. 16.0 b. 18.1 c. 18.3 d. 22.6 27. Coral bleaching refers to... a. loss of algal symbionts along with chlorophyll and other algal pigments. b. treatment of corals reefs with bleach to kill parasites. c. conversion of algal symbionts from photosynthesis to chemosynthesis. d. loss of external coral coloration when coral is eaten by reef fish.

Explanation / Answer

24) lactase - disaccharidase causes the hydrolysis of lactose into glucose and galactose

25)a) polypeptides cannot be absorbed due to thier large size

26)a) 16.0 represents that the fatty acid is more saturated and thus harmful

27) loss of algal symbionts along with chlorophyll and other algal pigments

coral bleaching - corals will expel algae living in their tissues causing the coral to turn white

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