Biochemistry Multiple Choice Questions and Answers pdf

Model Questions with answers and explanations in Biochemistry, Biochemistry Quiz Questions, Biochemistry Latest Practice test Questions and Answers

Biochemistry Multiple Choice Questions

Bio-Chemistry Objective type Questions and Answers List

1. The general chemical formula of carbohydrate is

a.      (CH2O)n
b.      (CH2O)2n
c.      (CHO)n
d.      CnH2nO
Ans. (a)

2. Which of the following is an aldotriose?
a.      Dihydroxyacetone
b.      Glyceraldehyde
c.      Ribulose
d.      Erythrose
Ans. (b)

3. What is the molecular formula of sucrose?
a.      C12H22O11
b.      C10H20O10
c.      C6H12O6
d.      C12H20O11
Ans. (a)

4. The glycosidic linkage between glucose molecule in maltose is
a.      β 1 – 4
b.      α 1 – 2
c.       α 1 – 4
d.      β 1 – 2
Ans. (c)

5. A keto pentose will have _____ sterioisomers.
a.      4
b.      6
c.      8
d.      10
Ans. (a)

6. The reserve food material of green algae is
a.       Laminarin
b.       Chrysolaminarin
c.       Floridian starch
d.       Starch
Ans. (d)

7. The only carbohydrate which is not having any chiral carbon atom is
a.       Glyceraldehyde
b.       Erythrose
c.       Dihydroxyacetone
d.       Erythrulose
Ans. (c)

8. Select the odd one from the following.
a.       Arabinose
b.       Xylose
c.       Lyxose
d.       Erythrose
Ans. (d)

9.  A pentose sugar reported to be present in heart cells
a.       Xylose
b.       Arabinose
c.       Lyxose
d.       Xylulose
Ans. (c)

10. Which of the following is an epimeric pair?
a.       D-glucose and D-mannose
b.       D-glucose and D-galactose
c.       D-glucose and L-glucose
d.       Both A and B
Ans (d)

11.  Select the odd one from the following
a.       Xylulose
b.      Dihydroxyacetone
c.       Glyceraldehyde
d.      Ribulose
Ans. (c)

12.  Which of the following sugar give a positive result with Seliwanoff test
a.       Sucrose
b.       Glucose
c.       Galactose
d.       Mannose
Ans. (a)

13.  Which of the following is a keto tetrose?
a.       Erythrulose
b.       Xylulose
c.       Sorbose
d.       Psicose
Ans. (a)

14.  The glycosidic linkage between two glucose molecules in isomaltose is
a.       α 1 – 4
b.      β 1 – 4
c.       α 1 – 6
d.      β 1 – 6
Ans. (c)

15.  Which of the following is an alpha lactone
a.       Vit. C
b.       Vit. D
c.       Vit. A
d.       Vit. K
 Ans. (a)

16.  A sweetener used in sugar less gums and candies
a.       Ribitol
b.       Xylitol
c.       Inositol
d.       Mannitol
Ans (b)

17.  The glycosidic linkage in cellobiose is
a.       α 1 – 4
b.      β 1 – 4
c.       α 1 – 6
d.      β 1 – 6
Ans. (b)

18.  Pick out the odd one from the following
a.       Deoxyribose
b.       Rhamnose
c.       Fucose
d.       Altrose
Ans. (d)

19.  Lectins are_________.
a.       Sugars specific to proteins
b.       Proteins specific to sugars
c.       Enzymes specific to carbohydrates
d.       Carbohydrates specific to enzymes
Ans. (b)

20.  Which of the following is a keto triose?
a.       Dihydroxyacetone
b.       Glyceraldehyde
c.       Ribulose
d.       Erythrose
Ans. (a)

21.  Maltose is a disaccharide of ____
a.       Glucose and galactose
b.      Glucose and glucose
c.       Glucose and lactose
d.      Fructose and lactose
Ans. (b)

22.  Glycosidic bond in sucrose is____
a.       α 1 – 4
b.      β 1 – 4
c.       α 1 – 2
d.      β 1 – 2
Ans. (c)

23.  Minimum number of carbon required for a ketose sugar to have cyclic structure is
a.       3
b.       4
c.       5
d.       6
Ans. (c)

24.  An aldo hexose will have _____ stereoisomers
a.       8
b.       10
c.       14
d.       16
Ans. (d)

25.  Minimum number of carbon required for a monosaccharide
a.       1
b.       2
c.       3
d.       4
Ans. (c)