MCQs on Biomolecules

MCQs on Biomolecules

1. Which biomolecule is distributed more widely in a cell?
a. Chloroplast
b. RNA
c. DNA
d. Spaherosomes

2. Which is a reducing sugar?
a. Galactose
b. Gluconic acid
c. Sucrose
d. β-methyl galactosidase

3. Most abundant RNA in the cell
a. rRNA
b. mRNA
c. tRNA
d. tRNA threonine

4. Name the simplest amino acid
a. Alanine
b. Tyrosine
c. Asparagine
d. Glycine

5. Mineral associated with cytochrome is
a. Mg
b. Cu and Ag
c. Fe
d. Cu

6. The most common secondary structure of proteins is
a. β-pleated sheet
b. β-pleated sheet parallel
c. β-pleated sheet non-parallel
d. α-helix

7. The term enzyme was coined by
a. Urey Miller
b. Pasteur
c. Kuhne
d. Buchner

8. β-oxidation occurs in
a. Nucleus
b. Cytoplasm
c. Mitochondria
d. Chloroplast

9. Koshland’s theory of enzyme action is known as
a. Lock and key theory
b. Reduced fit theory
c. Induced fit theory
d. Enzyme coenzyme theory

10. A high content of triglycerides are found in
a. VLDL
b. LDL
c. HDL
d. Chylomicrons

11. Haemoglobin has
a. Primary structure
b. Secondary structure
c. Tertiary structure
d. Quaternary structure

12. Which is the most abundant biomolecule on earth?
a. Mineral salts
b. Proteins
c. Lipids
d. Carbohydrates

13. In which of the following an anticodon occurs
a. tRNA
b. mRNA
c. rRNA
d. DNA

14. The fastest enzyme is
a. DNA gyrase
b. Pepsin
c. DNA polymerase
d. Carbonic anhydrase

15. Which of the following is a phospholipid?
a. Sterol
b. Cholesterol
c. Lecithin
d. Steroid

Answer Key

1- b	2- a	3- a	4- d	5- c	6- d	7- c	8- c
9- c	10- d	11- d	12- d	13- a	14- d	15- c