FREE BIO CHEMISTRY MCQs WITH ANSWER
FREE BIO CHEMISTRY MCQs WITH ANSWER
1. ADH test is based on the measurement of
(A) Specific gravity of urine
(B) Concentration of urea in urine
(C) Concentration of urea in blood
(D) Volume of urine in ml/minute
2. The specific gravity of urine normally ranges from
(A) 0.900–0.999
(B) 1.003–1.030
(C) 1.000–1.001
(D) 1.101–1.120
3. Specific gravity of urine increases in
(A) Diabetes mellitus
(B) Chronic glomerulonephritis
(C) Compulsive polydypsia
(D) Hypercalcemia 5
4. Fixation of specific gravity of urine to 1.010 is found in
(A) Diabetes insipidus
(B) Compulsive polydypsia
(C) Cystinosis
(D) Chronic glomerulonephritis
5. Addis test is the measure of
(A) Impairment of the capacity of the tubule to perform osmotic work
(B) Secretory function of liver
(C) Excretory function of liver
(D) Activity of parenchymal cells of liver
6. Number of stereoisomers of glucose is
(A) 4
(B) 8
(C) 16
(D) None of these
7. Maltose can be formed by hydrolysis of
(A) Starch
(B) Dextrin
(C) Glycogen
(D) All of these
8. α–D–Glucuronic acid is present in
(A) Hyaluronic acid
(B) Chondroitin sulphate
(C) Heparin
(D) All of these
(A) Specific gravity of urine
(B) Concentration of urea in urine
(C) Concentration of urea in blood
(D) Volume of urine in ml/minute
2. The specific gravity of urine normally ranges from
(A) 0.900–0.999
(B) 1.003–1.030
(C) 1.000–1.001
(D) 1.101–1.120
3. Specific gravity of urine increases in
(A) Diabetes mellitus
(B) Chronic glomerulonephritis
(C) Compulsive polydypsia
(D) Hypercalcemia 5
4. Fixation of specific gravity of urine to 1.010 is found in
(A) Diabetes insipidus
(B) Compulsive polydypsia
(C) Cystinosis
(D) Chronic glomerulonephritis
5. Addis test is the measure of
(A) Impairment of the capacity of the tubule to perform osmotic work
(B) Secretory function of liver
(C) Excretory function of liver
(D) Activity of parenchymal cells of liver
6. Number of stereoisomers of glucose is
(A) 4
(B) 8
(C) 16
(D) None of these
7. Maltose can be formed by hydrolysis of
(A) Starch
(B) Dextrin
(C) Glycogen
(D) All of these
8. α–D–Glucuronic acid is present in
(A) Hyaluronic acid
(B) Chondroitin sulphate
(C) Heparin
(D) All of these
9. Fructose is present in hydrolysate of
(A) Sucrose
(B) Inulin
(C) Both of the above
(D) None of these
10. A carbohydrate found in DNA is
(A) Ribose
(B) Deoxyribose
(C) Ribulose
(D) All of these
11. Ribulose is a these
(A) Ketotetrose
(B) Aldotetrose
(C) Ketopentose
(D) Aldopentose
12. A carbohydrate, commonly known as dextrose is
(A) Dextrin
(B) D-Fructose
(C) D-Glucose
(D) Glycogen
13. A carbohydrate found only in milk is
(A) Glucose
(B) Galactose
(C) Lactose
(D) Maltose
14. A carbohydrate, known commonly as invert sugar, is
(A) Fructose
(B) Sucrose
(C) Glucose
(D) Lactose
15. A heteropolysacchraide among the following is
(A) Inulin
(B) Cellulose
(C) Heparin
(D) Dextrin
16. The predominant form of glucose in solution is
(A) Acyclic form
(B) Hydrated acyclic form
(C) Glucofuranose
(D) Glucopyranose
17. An L-isomer of monosaccharide formed in human body is
(A) L-fructose
(B) L-Erythrose
(C) L-Xylose
(D) L-Xylulose
18. Hyaluronic acid is found in
(A) Joints
(B) Brain
(C) Abdomen
(D) Mouth
19. The carbon atom wh ich becomes asymmetric when the straight chain form of monosaccharide changes into ring form is known as
(A) Anomeric carbon atom
(B) Epimeric carbon atom
(C) Isomeric carbon atom
(D) None of these
(A) Sucrose
(B) Inulin
(C) Both of the above
(D) None of these
10. A carbohydrate found in DNA is
(A) Ribose
(B) Deoxyribose
(C) Ribulose
(D) All of these
11. Ribulose is a these
(A) Ketotetrose
(B) Aldotetrose
(C) Ketopentose
(D) Aldopentose
12. A carbohydrate, commonly known as dextrose is
(A) Dextrin
(B) D-Fructose
(C) D-Glucose
(D) Glycogen
13. A carbohydrate found only in milk is
(A) Glucose
(B) Galactose
(C) Lactose
(D) Maltose
14. A carbohydrate, known commonly as invert sugar, is
(A) Fructose
(B) Sucrose
(C) Glucose
(D) Lactose
15. A heteropolysacchraide among the following is
(A) Inulin
(B) Cellulose
(C) Heparin
(D) Dextrin
16. The predominant form of glucose in solution is
(A) Acyclic form
(B) Hydrated acyclic form
(C) Glucofuranose
(D) Glucopyranose
17. An L-isomer of monosaccharide formed in human body is
(A) L-fructose
(B) L-Erythrose
(C) L-Xylose
(D) L-Xylulose
18. Hyaluronic acid is found in
(A) Joints
(B) Brain
(C) Abdomen
(D) Mouth
19. The carbon atom wh ich becomes asymmetric when the straight chain form of monosaccharide changes into ring form is known as
(A) Anomeric carbon atom
(B) Epimeric carbon atom
(C) Isomeric carbon atom
(D) None of these
20. The smallest monosaccharide having furanose ring
structure is
(A) Erythrose
(B) Ribose
(C) Glucose
(D) Fructose
21. Which of the following is an epimeric pair?
(A) Glucose and fructose
(B) Glucose and galactose
(C) Galactose and mannose
(D) Lactose and maltose
22. α-Glycosidic bond is present in
(A) Lactose
(B) Maltose
(C) Sucrose
(D) All of these
23. Branching occurs in glycogen approximately after every
(A) Five glucose units
(B) Ten glucose units
(C) Fifteen glucose units
(D) Twenty glucose units
24. N–Acetylglucosamnine is present in
(A) Hyaluronic acid
(B) Chondroitin sulphate
(C) Heparin
(D) All of these
25. Iodine gives a red colour with
(A) Starch
(B) Dextrin
(C) Glycogen
(D) Inulin
26. Amylose is a constituent of
(A) Starch
(B) Cellulose
(C) Glycogen
(D) None of these
27. Synovial fluid contains
(A) Heparin
(B) Hyaluronic acid
(C) Chondroitin sulphate
(D) Keratin sulphate
28. Gluconeogenesis is decreased by
(A) Glucagon
(B) Epinephrine
(C) Glucocorticoids
(D) Insulin
(A) Erythrose
(B) Ribose
(C) Glucose
(D) Fructose
21. Which of the following is an epimeric pair?
(A) Glucose and fructose
(B) Glucose and galactose
(C) Galactose and mannose
(D) Lactose and maltose
22. α-Glycosidic bond is present in
(A) Lactose
(B) Maltose
(C) Sucrose
(D) All of these
23. Branching occurs in glycogen approximately after every
(A) Five glucose units
(B) Ten glucose units
(C) Fifteen glucose units
(D) Twenty glucose units
24. N–Acetylglucosamnine is present in
(A) Hyaluronic acid
(B) Chondroitin sulphate
(C) Heparin
(D) All of these
25. Iodine gives a red colour with
(A) Starch
(B) Dextrin
(C) Glycogen
(D) Inulin
26. Amylose is a constituent of
(A) Starch
(B) Cellulose
(C) Glycogen
(D) None of these
27. Synovial fluid contains
(A) Heparin
(B) Hyaluronic acid
(C) Chondroitin sulphate
(D) Keratin sulphate
28. Gluconeogenesis is decreased by
(A) Glucagon
(B) Epinephrine
(C) Glucocorticoids
(D) Insulin
29. Lactate formed in muscles can be utilised through
(A) Rapoport-Luebeling cycle
(B) Glucose-alanine cycle
(C) Cori’s cycle
(D) Citric acid cycle
30. Glucose-6-phosphatase is not present in
(A) Liver and kidneys
(B) Kidneys and muscles
(C) Kidneys and adipose tissue
(D) Muscles and adipose tissue
31. Pyruvate carboxylase is regulated by
(A) Induction
(B) Repression
(C) Allosteric regulation
(D) All of these
32. Fructose-2, 6-biphosphate is formed by the action of
(A) Phosphofructokinase-1
(B) Phosphofructokinase-2
(C) Fructose biphosphate isomerase
(D) Fructose-1, 6-biphosphatase
33. The highest concentrations of fructose are found in
(A) Aqueous humor
(B) Vitreous humor
(C) Synovial fluid
(D) Seminal fluid
34. Glucose uptake by liver cells is
(A) Energy-consuming
(B) A saturable process
(C) Insulin-dependent
(D) Insulin-independent
35. Renal threshold for glucose is decreased in
(A) Diabetes mellitus
(B) Insulinoma
(C) Renal glycosuria
(D) Alimentary glycosuria
36. Active uptake of glucose is inhibited by
(A) Ouabain
(B) Phlorrizin
(C) Digoxin
(D) Alloxan
37. Glucose-6-phosphatase is absent or deficient in
(A) Von Gierke’s disease
(B) Pompe’s disease
(C) Cori’s disease
(D) McArdle’s disease
(A) Rapoport-Luebeling cycle
(B) Glucose-alanine cycle
(C) Cori’s cycle
(D) Citric acid cycle
30. Glucose-6-phosphatase is not present in
(A) Liver and kidneys
(B) Kidneys and muscles
(C) Kidneys and adipose tissue
(D) Muscles and adipose tissue
31. Pyruvate carboxylase is regulated by
(A) Induction
(B) Repression
(C) Allosteric regulation
(D) All of these
32. Fructose-2, 6-biphosphate is formed by the action of
(A) Phosphofructokinase-1
(B) Phosphofructokinase-2
(C) Fructose biphosphate isomerase
(D) Fructose-1, 6-biphosphatase
33. The highest concentrations of fructose are found in
(A) Aqueous humor
(B) Vitreous humor
(C) Synovial fluid
(D) Seminal fluid
34. Glucose uptake by liver cells is
(A) Energy-consuming
(B) A saturable process
(C) Insulin-dependent
(D) Insulin-independent
35. Renal threshold for glucose is decreased in
(A) Diabetes mellitus
(B) Insulinoma
(C) Renal glycosuria
(D) Alimentary glycosuria
36. Active uptake of glucose is inhibited by
(A) Ouabain
(B) Phlorrizin
(C) Digoxin
(D) Alloxan
37. Glucose-6-phosphatase is absent or deficient in
(A) Von Gierke’s disease
(B) Pompe’s disease
(C) Cori’s disease
(D) McArdle’s disease
38. Debranching enzyme is absent in
(A) Cori’s disease
(B) Andersen’s disease
(C) Von Gierke’s disease
(D) Her’s disease
39. McArdle’s disease is due to the deficiency of
(A) Glucose-6-phosphatase
(B) Phosphofructokinase
(C) Liver phosphorylase
(D) muscle phosphorylase
40. Tautomerisation is
(A) Shift of hydrogen
(B) Shift of carbon
(C) Shift of both
(D) None of these
41. In essential pentosuria, urine contains
(A) D-Ribose
(B) D-Xylulose
(C) L-Xylulose
(D) D-Xylose
42. Action of salivary amylase on starch leads to the formation of
(A) Maltose
(B) Maltotriose
(C) Both of the above
(D) Neither of these
43. Congenital galactosaemia can lead to
(A) Mental retardation
(B) Premature cataract
(C) Death
(D) All of the above
44. Uridine diphosphate glucose (UDPG) is
(A) Required for metabolism of galactose
(B) Required for synthesis of glucuronic acid
(C) A substrate for glycogen synthetase
(D) All of the above
45. Catalytic activity of salivary amylase requires the presence of
(A) Chloride ions
(B) Bromide ions
(C) Iodide ions
(D) All of these
46. The following is actively absorbed in the intestine:
(A) Fructose
(B) Mannose
(C) Galactose
(D) None of these
(A) Cori’s disease
(B) Andersen’s disease
(C) Von Gierke’s disease
(D) Her’s disease
39. McArdle’s disease is due to the deficiency of
(A) Glucose-6-phosphatase
(B) Phosphofructokinase
(C) Liver phosphorylase
(D) muscle phosphorylase
40. Tautomerisation is
(A) Shift of hydrogen
(B) Shift of carbon
(C) Shift of both
(D) None of these
41. In essential pentosuria, urine contains
(A) D-Ribose
(B) D-Xylulose
(C) L-Xylulose
(D) D-Xylose
42. Action of salivary amylase on starch leads to the formation of
(A) Maltose
(B) Maltotriose
(C) Both of the above
(D) Neither of these
43. Congenital galactosaemia can lead to
(A) Mental retardation
(B) Premature cataract
(C) Death
(D) All of the above
44. Uridine diphosphate glucose (UDPG) is
(A) Required for metabolism of galactose
(B) Required for synthesis of glucuronic acid
(C) A substrate for glycogen synthetase
(D) All of the above
45. Catalytic activity of salivary amylase requires the presence of
(A) Chloride ions
(B) Bromide ions
(C) Iodide ions
(D) All of these
46. The following is actively absorbed in the intestine:
(A) Fructose
(B) Mannose
(C) Galactose
(D) None of these
47. An amphibolic pathway among the following is
(A) HMP shunt
(B) Glycolysis
(C) Citirc acid cycle
(D) Gluconeogenesis
48. Cori’s cycle transfers
(A) Glucose from muscles to liver
(B) Lactate from muscles to liver
(C) Lactate from liver to muscles
(D) Pyruvate from liver to muscles
49. Excessive intake of ethanol increases the ratio:
(A) NADH : NAD+
(B) NAD+ : NADH
(C) FADH2 : FAD
(D) FAD : FADH2
50. Ethanol decreases gluconeogenesis by
(A) Inhibiting glucose-6-phosphatase
(B) Inhibiting PEP carboxykinase
(C) Converting NAD+ into NADH and decreasing the availability of pyruvate
(D) Converting NAD+ into NADH and decreasing the availability of lactate
51. Glycogenin is
(A) Uncoupler of oxidative phosphorylation
(B) Polymer of glycogen molecules
(C) Protein primer for glycogen synthesis
(D) Intermediate in glycogen breakdown
52. During starvation, ketone bodies are used as a fuel by
(A) Erythrocytes
(B) Brain
(C) Liver
(D) All of these
(A) HMP shunt
(B) Glycolysis
(C) Citirc acid cycle
(D) Gluconeogenesis
48. Cori’s cycle transfers
(A) Glucose from muscles to liver
(B) Lactate from muscles to liver
(C) Lactate from liver to muscles
(D) Pyruvate from liver to muscles
49. Excessive intake of ethanol increases the ratio:
(A) NADH : NAD+
(B) NAD+ : NADH
(C) FADH2 : FAD
(D) FAD : FADH2
50. Ethanol decreases gluconeogenesis by
(A) Inhibiting glucose-6-phosphatase
(B) Inhibiting PEP carboxykinase
(C) Converting NAD+ into NADH and decreasing the availability of pyruvate
(D) Converting NAD+ into NADH and decreasing the availability of lactate
51. Glycogenin is
(A) Uncoupler of oxidative phosphorylation
(B) Polymer of glycogen molecules
(C) Protein primer for glycogen synthesis
(D) Intermediate in glycogen breakdown
52. During starvation, ketone bodies are used as a fuel by
(A) Erythrocytes
(B) Brain
(C) Liver
(D) All of these
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