Carbohydrate – Section 1

26. The conversion of pyruvate to lactate is catalyzed by

A. pyruvate carboxylase
B. lactate dehydrogenase
C. pyruvate dismutase
D. pyruvate decarboxylase

Correct Answer: B. lactate dehydrogenase

27. Which of the following can act as precursors for gluconeogenesis?

A. Lactate
B. Glycerol
C. Alanine
D. All of these

Correct Answer: D. All of these

28. a-amylose is similar to

A. β-sheets
B. β-turned coils
C. α-helices
D. the hydrophobic core

Correct Answer: C. α-helices

29. Storage polysaccharide made by animals is

A. amylopectin
B. glycogen
C. cellulose
D. collagen

Correct Answer: B. glycogen

30. The glycosidic bond

A. in maltose is not hydrolyzed in lactose intolerant humans
B. in sucrose is hydrolyzed by bees
C. joins glucose and fructose to form sucrose
D. both (b) and (c)

Correct Answer: D. both (b) and (c)

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