Enzymes MCQs Part 8

title> Enzymes MCQs Part 7

1. The ion which activates salivary amylase activity is

• Chloride
• Bicarbonate
• Sodium
• Potassium

2. The pancreatic amylase activity is increased in the presence of

• Hydrochloric acid
• Bile salts
• Thiocyanate ions
• Calcium ions

3. carbohydrate which can not be digested in human gut is

• Cellulose
• Starch
• Glycogen
• Maltose

4. The sugar absorbed by facilitated diffusion and requiring Na independent transporter is

• Glucose
• Fructose
• Galactose
• Ribose

5. In the intestine the rate of absorption is highest for

• Glucose and galactose
• Fructose and mannose
• Fructose and pentose
• Mannose and pentose

6. Glucose absorption is promoted by

• Vitamin A
• Thiamin
• Vitamin C
• Vitamin K

7. The harmone acting directly on intestinal mucosa and stimulating glucose absorption is

• Insulin
• Glucagon
• Thyroxine
• Vasopressin

8. Given that the standard free energy change (ΔG^o) for the hydrolysis of ATP is –7.3 K cal/mol and that for the hydrolysis of Glucose 6-phosphate is –3.3 Kcal/mol, the ΔG^o for the phosphorylation of glucose is Glucose + ATP → Glucose 6– Phosphate + ADP.

• –10.6 Kcal/mol
• –7.3 Kcal/mol
• –4.0 Kcal/mol
• +4.0 Kcal/mol

9. At low blood glucose concentration, brain but not liver will take up glucose. It is due to the

• Low Km of hexokinase
• Low Km of glucokinase
• Specificity of glucokinase
• Blood brain barrier

10. In the reaction below, Nu TP stands for NuTP + glucose -> Glucose 6–Phosphate + NuDP.

• ATP
• CTP
• GTP
• UTP

Score =

Correct answers:

< Enzymes MCQs Parts = 1.. 2.. 3.. 4.. 5.. 6.. 7.. 8..

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