Biomolecules (Biology) · Question 3

Identify the correct statements about biomolecules. Choose the correct answer from the options given below :

1. A, B and C only
2. B, D and E only
3. B, C and E only
4. C, D and E only

Answer

(3) B, C and E only

Solution

A: As per NCERT, lipids are generally water insoluble ⇒ incorrect.

B: Proteins are polypeptides, i.e. linear chains of amino acids linked by peptide bonds ⇒ correct.

C: Polysaccharides are long chains of sugars (monosaccharide units) ⇒ correct.

D: Adenine and guanine are substituted purines; uracil, cytosine and thymine are substituted pyrimidines ⇒ incorrect.

E: Almost all enzymes are proteins (ribozymes are the exception) ⇒ correct.

∴ Correct statements: B, C and E only.

Answer: (3)