MCQ on Biochemistry

1. Sugars that differ only by the stereochemistry at a single carbon (other than the anomeric carbon) are called:

A) Enantiomers

B) Anomers

C) Isomers 

D) Epimers

2. Absorption of UV light at 280 nm by purified proteins is due to the amino acids: 

A) Methionine and Valine 

B) Tryptophan and Tyrosine

C) Histidine and Cysteine

D) Glycine and Lysine  

3.Which of the following is NOT a chaperone? 

A) Calnexin

B) Hsp70 

C) Cadherin 

D) Calreticulin

4. The type of isomerism shown by Fumaric acid and Maleic acid are

A) Geometrical isomerism with maleic acid (trans-form) and Fumaric acid (cis-form)

B) Geometrical isomerism with maleic acid (cis form) and Fumaric acid (trans-form)

C) Optical isomerism with maleic acid (L-form) and Fumaric acid (D-form)

D) Optical isomerism with maleic acid (D-form) and Fumaric acid (L-form)

5. The protein structure involving the interaction, orientation and organization of two or more polypeptide chains to form a functional proteins

A)Primary structure

B)Secondary structure

C)Tertiary structure

D)Quaternary structure

6. A solution of pH 4 has been diluted by adding 40 ml of double distilled water to 10 ml of the solution. What will be the pH of the diluted solution?

A)4.5

B) 5.0

C) 3.5

D) 4.0

MCQ on Biochemistry

7.An amino acid with a non polar side chain is

A) Asparagine

B) Alanine

C) Glutamine

D)Serine 

8.Which among the following is NOT a fibrillar protein ?

A) Elastin

B) Collagen

C) Myosin

D) Albumin

9. Question45:-The Nobel Prize 2020 winners for Chemistry

A) Louise Gluck, Roger Penrose

B) Paul R. Milgrom and Robert B. Wilson

C) Emmanuelle Charpentier and Jennifer A. Doudna

D) Reinhard Genzel and Andrea Ghez

10. Which of these enzymes can be found associated with pyrenoids ?

I. Alpha Amylase

II. Rubisco

III. PEP

IV. Citric acid synthase

A) I

B) II

C) I and II

D) All of these

Learn more: Topic wise Biochemistry Questions 

Answers:

1. D) Epimers

2. B) Tryptophan and Tyrosine

3. C) Cadherin 

4. A) Geometrical isomerism with maleic acid (trans-form) and Fumaric acid (cis-form)

5. D)Quaternary structure

6. A)4.5

7. B) Alanine

8. D) Albumin

9. C) Emmanuelle Charpentier and Jennifer A. Doudna

10. B) II

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