Question

Identify the substances having glycosidic bonds and peptide bonds respectively in their structures.

• A. Cellulose, lecithin
• B. Inulin, insulin
• C. Cholesterol, chitin
• D. Glycerol, trypsin

Answer 1

The correct option is B

Inulin, insulin

The correct option is B.

Explanation of the correct answer:

1. Inulin is a polysaccharide that has a beta 2,1-glycosidic bond and stays in the bowel to help certain beneficial bacteria grow.
2. Insulin is a protein that has a peptide bond that allows glucose to enter the body's cells to provide energy.

Explanation of the incorrect options:

Option A:

1. Cellulose is a linear polymer that has beta 1,4-glycosidic bonds.
2. Lecithin is a phospholipid that has hydrogen bonds.

Option C:

1. Cholesterol is an organic compound having double bonds.
2. Chitin is a polysaccharide formed by glycosidic bonds.

Option D:

1. Glycerol is a polyol that has hydrogen bonds.
2. Trypsin is a globular protein that has peptide bonds.

Final answer: Inulin has a glycosidic bond while insulin has a peptide bond.