Biomolecules Quiz

Which of the following is an essential amino acid?

• Glycine

• Valine

• Alanine

• Serine

The bond formed between two amino acids in a protein is called:

• Glycosidic bond

• Hydrogen bond

• Peptide bond

• Disulfide bond

Which of the following proteins is fibrous in nature?

• Hemoglobin

• Insulin

• Keratin

• Myoglobin

The primary structure of a protein refers to:

• Sequence of amino acids

• α-helix or β-pleated sheet

• Folding of polypeptide chains into a 3D structure

• Association of multiple polypeptide subunits

Denaturation of proteins involves:

• Breaking of peptide bonds

• Loss of secondary and tertiary structure

• Conversion of α-helix to β-pleated sheet

• Both (a) and (c)

Which of the following vitamins is water-soluble?

• Vitamin A

• Vitamin D

• Vitamin C

• Vitamin K

Deficiency of Vitamin B12 causes:

• Beri-beri

• Scurvy

• Pernicious anemia

• Rickets

Which sugar is present in RNA?

• Deoxyribose

• Ribose

• Glucose

• Galactose

In DNA, adenine pairs with:

• Guanine

• Thymine

• Cytosine

• Uracil

The basic building block of nucleic acids is:

• Amino acid

• Nucleotide

• Monosaccharide

• Fatty acid