Carbohydrate – Section 1

21. Hydrolysis of lactose yields

A. galactose and fructose
B. galactose and glucose
C. glucose and fructose
D. fructose and galactose

Correct Answer: B. galactose and glucose

22. Two major products of pentose phosphate pathway are

A. nicotinamide adenine dinucleotide and ribose 5-phosphate
B. flavine adenine dinucleotide and glucose 5-phosphate
C. FAD and CoA
D. NADPH and NAD

Correct Answer: A. nicotinamide adenine dinucleotide and ribose 5-phosphate

23. A catabolic intermediate which stimulates phosphofructokinase would stimulate

A. gluconeogenesis
B. glycolysis
C. glycogen synthesis
D. none of these

Correct Answer: B. glycolysis

24. Pyruvate is initially converted to which of the following in the gluconeogenesis?

A. Glycerol
B. Phosphoenol pyruvate
C. Oxaloacetate
D. Acetyl CoA

Correct Answer: C. Oxaloacetate

25. Boat and chair conformations are found

A. in pyranose sugars
B. in any sugar without axial -OH groups
C. in any sugar without equatorial -OH groups
D. only in D-glucopyranose

Correct Answer: A. in pyranose sugars

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