MCQ Questions on Biomolecules
1. Which biomolecule is distributed more widely in a cell?
(a) Chloroplast
(b) RNA
(c) DNA
(d) Spaherosomes
Answer
Answer: (b) RNA
2. Which is a reducing sugar?
(a) Galactose
(b) Gluconic acid
(c) Sucrose
(d) β-methyl galactosidase
Answer
Answer: (a) Galactose
3. Most abundant RNA in the cell
(a) rRNA
(b) mRNA
(c) tRNA
(d) tRNA threonine
Answer
Answer: (a) rRNA
4. Name the simplest amino acid
(a) Alanine
(b) Tyrosine
(c) Asparagine
(d) Glycine
Answer
Answer: (d) Glycine
5. Mineral associated with cytochrome is
(a) Mg
(b) Cu and Ag
(c) Fe
(d) Cu
Answer
Answer: (c) Fe
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
Answer
Answer: (d) α-helix
7. The term enzyme was coined by
(a) Urey Miller
(b) Pasteur
(c) Kuhne
(d) Buchner
Answer
Answer: (c) Kuhne
8. β-oxidation occurs in
(a) Nucleus
(b) Cytoplasm
(c) Mitochondria
(d) Chloroplast
Answer
Answer: (c) Mitochondria
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
Answer
Answer: (c) Induced fit theory
10. A high content of triglycerides are found in
(a) VLDL
(b) LDL
(c) HDL
(d) Chylomicrons
Answer
Answer: (d) Chylomicrons
11. Haemoglobin has
(a) Primary structure
(b) Secondary structure
(c) Tertiary structure
(d) Quaternary structure
Answer
Answer: (d) Quaternary structure
12. Which is the most abundant biomolecule on earth?
(a) Mineral salts
(b) Proteins
(c) Lipids
(d) Carbohydrates
Answer
Answer: (d) Carbohydrates
13. In which of the following an anticodon occurs
(a) tRNA
(b) mRNA
(c) rRNA
(d) DNA
Answer
Answer: (a) tRNA
14. The fastest enzyme is
(a) DNA gyrase
(b) Pepsin
(c) DNA polymerase
(d) Carbonic anhydrase
Answer
Answer: (d) Carbonic anhydrase
15. Which of the following is a phospholipid?
(a) Sterol
(b) Cholesterol
(c) Lecithin
(d) Steroid
Answer
Answer: (c) Lecithin