CBSE Class 12 Biomolecules with Answers Multiple Choice Questions with Answers. MCQ Questions Class 12 Biomolecules with Answers with Answers Is Prepared Based on Latest Exam Pattern. Students can solve NCERT Class 12 Biomolecules with Answers MCQs with Answers to know their preparation level.
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MCQ Questions Class 12 Biomolecules with Answers - Set - 4
Question 1:
Which one of the following is not present in RNA?
(a) Uracil
(b) Thymine
(c) Ribose
(d) Phosphate
Correct Answer – (B)
Question 2:
Which functional group participates in disulphide bond formation in proteins?
(a) Thiolacetone
(b) Thiol
(c) Thioether
(d) Thioester
Correct Answer – (B)
Question 3:
The pyrimidine bases present in DNA are
(a) cytosine and adenine
(b) cytosine and guanine
(c) cytosine and thymine
(d) cytosine and uracil
Correct Answer – (C)
Question 4:
Which one of the following statements is true?
(a) Saponification of oil yields a diol
(b) Drying ofoil involves hydrolysis
(c) Addition of antioxidant to oil minimises rancidity
(d) Refining of oil involves hydrogenation
Correct Answer – (C)
Question 5:
Chargaff’s rule states that in an organism
(a) amount of adenine (A) is equal to that of thymine (T) and the amount of guanine (G) is equal to that of cytosine (C)
(b) amount of adenine (A) is equal to that of guanine (G) and the amount of thymine (T) is equal to that of cytosine (C)
(c) amount of adenine (A) is equal to that of cytosine (C) and the amount of thymine (T) is equal to that of guanine (G)
(d) amounts of all bases are equal.
Correct Answer – (A)
MCQ Questions Class 12 Biomolecules With Answers
Question 6:
The purine base present in RNA is
(a) guanine
(b) thymine
(c) cytosine
(d) uracil
Correct Answer – (A)
Question 7:
There are 20 naturally occurring amino acids.The maximum number of tripeptides that can be obtained is
(a) 8000
(b) 6470
(c) 7465
(d) 5360
Correct Answer – (A)
Question 8:
Which base is present in RNA but not in DNA ?
(a) Uracil
(b) Cytosine
(c) Guanine
(d) Thymine
Correct Answer – (A)
Question 9:
Lipids are
(a) nucleic acids occurring in plants
(b) proteins occurring in animals
(c) carbohydrates occurring in plants
(d) fats of natural origin
Correct Answer – (D)
Question 10:
RNA and DNA are chiral molecules, their chirality is due to
(a) chiral bases
(b) chiral phosphate ester units
(c) D-sugar component
(d) L-sugar component
Correct Answer – (C)
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