CARBOHYDRATE MCQ
1.The general formula of monosaccharides is
(A )CnH2nOn
(B) C2nH2On
(C) CnH2O2n
(D) CnH2nO2n
2.The general formula of polysaccharides is
(A) (C6H10O5)n
(B) (C6H12O5)n
(C) (C6H10O6)n
(D) (C6H10O6)n
3.The aldose sugar is
(A )Glycerose
(B) Ribulose
(C) Erythrulose
(D) Dihydoxyacetone
4.A triose sugar is
(A
)Glycerose
(B) Ribose
(C) Erythrose
(D) Fructose
5.Polysaccharides are
(A )Polymers
(B) Acids
(C) Proteins
(D) Oils
6.Sucrose consists of
(A )Glucose + glucose
(B )Glucose + fructose
(C )Glucose + Galactose
(D ) Fractose +Fractose
7.Mutarotation refers to change in
(A ) pH
(B) Optical rotation
(C) Conductance
(D) Chemical properties
8.Glucose on reduction with sodium amalgam forms
(A )Dulcitol
(B) Sorbitol
(C) Mannitol
(D) Mannitol and sorbitol
9.Glucose on oxidation does not give
(A )Glycoside
(B) Glucosaccharic acid
(C) Gluconic acid
(D) Glucuronic acid
10.A positive Benedict’s test
is not given by
(A )Sucrose
(B) Lactose
(C) Maltose
(D) Glucose
11.Starch is a
(A )Polysaccharide
(B) Monosaccharide
(C) Disaccharide
(D) None of these
12.A positive Seliwanoff’s test
is obtained with
(A )Glucose
(B) Fructose
(C) Lactose
(D) Maltose
13.Osazones are not formed with the
(A )Glucose
(B) Fructose
(C) Sucrose
(D) Lactose
14.A carbohydrate, commonly known as dextrose is
(A )Dextrin
(B) D-Fructose
(C) D-Glucose
(D) Glycogen
15.A carbohydrate found only in milk is
(A )Glucose
(B) Galactose
(C) Lactose
(D) Maltose
16.A carbohydrate, known commonly as invert sugar, is
(A )Fructose
(B) Sucrose
(C) Glucose
(D) Lactose
17.Which of the following is an epimeric pair?
(A )Glucose and fructose
(B )Glucose and galactose
(C )Galactose and mannose
(D )Lactose and maltose
18.Iodine gives a brown wine colour with
(A
)Starch
(B) Dextrin
(C) Glycogen
(D) Inulin
19.Amylose is a constituent of
(A )Starch
(B ) Cellulose
(C) Glycogen
(D) None of these
20.Gluconeogenesis is decreased by
(A
)Glucagon
(B ) Epinephrine
(C) Glucocorticoids
(D) Insulin
21.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
22.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
23.Renal threshold for glucose is decreased in
(A )Diabetes mellitus
(B ) Insulinoma
(C) Renal glycosuria
(D) Alimentary glycosuria
24.Obesity increases the risk of
(A )Hypertension
( B) Diabetes mellitus
( C)Cardiovascular disease
( D ) All of these
25.Worldwide, the most common vitamin deficiency is that of
(A )Ascorbic acid
(B) Folic acid
(C) Vitamin A
(D) Vitamin D
26.Restriction of salt intake is generally recommended in
(A )Diabetes mellitus
(B) Hypertension
(C) Cirrhosis of liver
(D) Peptic ulcer
27.Polyuria can occur in
(A )Diabetes mellitus
(B) Diarrhoea
(B )Acute glomerulonephritis
(D )High fever
28.Normal specific gravity of urine is
(A) 1.000–1.010
(B) 1.012–1.024
(C) 1.025–1.034
(D) 1.035–1.045
29.Specific gravity of urine is decreased in
(A) Diabetes mellitus
(B )Acute glomerulonephritis
(C )Diarrhoea
(D ) Chronic glomerulonephritis
30.The number of isomers of glucose is
(A) 4
(B) 8
(C) 12
(D) 16
31.The epimers of glucose is
(A )Fructose
(B) Galactose
(C) Ribose
(D) Deoxyribose
32.The intermediate in hexose monophos- phate shunt is
(A ) D-Ribolose
(B) D-Arobinose
(C) D-xylose
(D) D-lyxose
33.Honey contains the hydrolytic product of
(A )Lactose
(B) Maltose
(C) Inulin
(D) Starch
34.On boiling Benedict’s solution is not reduced by
(A )Sucrose
(B) Lactose
(C) Maltose
(D) Fructose
35.Glycosides are found in many
(A )Vitamins
(B) Drugs
(C) Minerals
(D) Nucleoproteins
36.The distinguishing test between monosaccharides and
dissaccharides is
(A )Bial’s test
(B) Selwanoff’s test
(C) Barfoed’s test
(D) Hydrolysis test
37.Active transport of sugar is depressed by the agent:
(A)Oxaloacetate
(B) Fumarate
(C) Malonate
(D) Succinate
38.The general test for detection of carbohydrates is
(A )Iodine test
(B) Molisch test
(C) Barfoed test
(D) Osazone test
39.Glucose absorption may be decreased in
(A )Oedema
(B) Nephritis
(C) Rickets
(D) Osteomalitis
40.Glycogen synthetase activity is depressed by
(A ) Glucose
(B) Insulin
(C) Cyclic AMP
(D) Fructokinase
41.Hexokinase has a high affinity for glucose than
(A
)Fructokinase
(B) Galactokinase
(C) Glucokinase
(D) All of the above
42.The reaction succinyl COA to succinate requires
(A )CDP
(B) ADP
(C) GDP
(D) NADP+
43.The carrier of the citric acid cycle is
(A )Succinate
(B) Fumarate
(C) Malate
(D) Oxaloacetate
44.The following is an enzyme required for glycolysis:
(A )Pyruvate kinase
(B )Pyruvate carboxylase
(C )Glucose-6-phosphatase
(D ) Glycerokinase
45. Which of the following is not an enzyme involved in glycolysis?
(A) Euolase
(B) Aldolose
(C) Hexokinase
(D) Glucose oxidase
46.Acetyl CoA is not used for the synthesis of
(A ) Fatty acid
(B) Cholesterol
(C) Pyruvic acid
(D) Citric acid
47.Synthesis of Glucose from amino acids is termed as
(A ) Glycolysis
(B) Gluconeogenesis
(C) Glycogenesis
(D) Lipogenesis
48.Polysaccharides
(A )Contain many monosaccharide units which may or may not be of the same kind
(B)Function mainly a storage or structural compounds
(C )Are present in large amounts in connective tissue
(D ) All of these
49.Which of the following is a substrate for aldolase activity in Glycolytic pathway?
(A )Glyceraldehyde-3-p
(B )Glucose-6-p
(C )Fructose-6-p
(D )Fructose1, 6-bisphosphate
50.The synthesis of glucose from pyruvate by gluconeogenesis
(A )Requires the participation of biotin
(B )Occurs exclusively in the cytosol
(C )Is inhibited by elevated level of insulin
(D )Requires oxidation/reduction of FAD
51.The conversion of pyruvate to acetyl CoA and CO2
(A)Is reversible
(B ) Involves the participation of lipoic acid
(C )Depends on the coenzyme biotin
(D )Occurs in the cytosol
52.Invert sugar is
(A)Lactose
(B)Mannose
(C)Fructose
(D)Hydrolytic product of sucrose
53.The carbohydrate reserved in human body is
(A)Starch
(B) Glucose
(C) Glycogen
(D) Inulin
54.The glycolysis is regulated by
( A) Hexokinase
(B) Phosphofructokinase
(C) Pyruvate kinase
(D) All of these
55.How many ATPs are produced in the conversion of phosphoenol pyruvate
to citrate?
(A) 1
(B) 2
(C) 4
(D) 6
56.Galactose is a main constituent of
(A )Milk sugar
(B) Honey
(C) Cane sugar
(D) Chitin
57.Glycogen is present in all body tissues except
(A)Liver
(B) Brain
(C) Kidney
(D) Stomach
58.Iodine test is positive for starch, dextrin and
(A ) Mucoproteins
(B) Agar
(C) Glycogen
(D) Cellulose
59.Epimers of glucose is
(A
)Fructose
(B) Galactose
(C) Ribose
(D) Deoxyribose
60.The distinguishing test between monosaccharides and dissaccharide is
(A )Bial’s test
(B) Seliwanoff’s test
(C) Barfoed’s test
(D) Hydrolysis test
61.Cane sugar is known as
(A) Galactose
(B) Sucrose
(C) Fructose
(D) Maltose
62.Which of the following is not reducing sugar?
(A)Lactose
(B) Maltose
(C) Sucrose
(D) Fructose
0 Comments