CBSE Class 11 Biology Biomolecules MCQs Set D

Question. Select the correctly matched.
(a) Anthocyanins – Alkaloids
(b) Carotenoids – Toxins
(c) Ricin – Drugs
(d) Lemon grass oil – Essential oils.

Answer: D

Question. Pigments are considered as the secondary metabolites, having some particular functions. Which of the following is an example of pigments?
(a) Carotenoids
(b) Codeine
(c) Concanavalin-A
(d) Curcumin

Answer: A

Question. Physical and chemical properties of amino acids depend on
(a) Amino group
(b) Carboxylic group
(c) R-group
(d) All of the options

Answer: D

Question. Which of the following is acidic amino acid.
(a) Glutamic acid
(b) Aspartic acid
(c) Ascorbic acid
(d) Both (a) and (b)

Answer: D

Question. Which of the following is the molecular formula of Palmitic acid ?
(a) CH₃(CH₂)₂COOH
(b) CH₃(CH₂)₁₄COOH
(c) CH₃(CH₂)₁₆COOH
(d) CH₃(CH₂)₁₈COOH 

Answer: B

Question. Which of the following elements present most abundantly on earth crust?
(a) Carbon
(b) Hydrogen
(c) Oxygen
(d) Silicon

Answer: C

Question. Inulin is a polymer of
(a) Glucose
(b) Amino acids
(c) Fructose
(d) Nucleotides

Answer: C

Question. Which of the following compounds is used in the chemical analysis of living tissue?
(a) CH₃COOH
(b) Cl₃CCOOH
(c) HCHO
(d) C₆H₁₂O₆  

Answer: B

Question. Which of the following can be included along with biomolecules?
(1) Carbohydrate
(2) Protein
(3 Lipids
(4) Nucleic acid
(5) Vitamins
(6) Minerals
(7) Water
(a) 1, 2, 3, 4, 5, 6, 7
(b) 1, 2, 3, 4, 5, 6
(c) 1, 2, 3, 4, 5
(d) 1, 2, 3, 4

Answer: C

Question. Which of the following is not the example of aromatic amino acid?
(a) Tyrosin
(b) Tryptophan
(c) Threonin
(d) Phenylalanine

Answer: C

Question. Which of the following can not be considered as the example of polymeric substances?
(a) Rubber
(b) Gums
(c) Cellulose
(d) Vinblastin

Answer: D

Question. In proteins, amino acids are attached together by :
(a) Peptide bond
(b) Amide bond
(c) Ester bond
(d) a & b both

Answer: D

Question. Which of the following is micromolecule ?
(a) Lipid
(b) DNA
(c) Protein
(d) All of the options

Answer: A

Question. When a dry piece of tissue is fully burnt, all the carbon compounds are oxidised to gaseous form and the remaining is called ‘ash’. The ash contains all of the following, except.
(a) Calcium
(b) Magnesium
(c) Sulphure
(d) Nucleic acid

Answer: D