Which structure(s) of proteins remains(s) intact during denaturation process?

1. Both secondary and tertiary structures

2. Primary structure only

3. Secondary structure only

4. Tertiary structure only

The non-essential amino acid among the following is:

Enzymes that utilize ATP in phosphate transfer require an alkaline earth metal (M) as the cofactor. M is:

Which one of the following is a peptide hormone?

1. Glucagon

2. Testosterone

3. Thyroxin

4. Adernaline

During the process of digestion, the proteins present in food materials are
hydrolysed to amino acids as shown below.

Proteins  \(\xrightarrow[]{\textbf{Enzyme(A)}}\mathrm{}\) Polypeptides  \(\xrightarrow[]{\textbf{Enzyme(B)}}\mathrm{}\)  Amino acids
 
Enzymes (A) and (B)  are respectively:
 

In DNA, the complementary bases are:

1. Adenine and thymine; guanine and cytosine

2. Adenine and thymine; guanine and uracil

3. Adenine and guanine, thymine and cytosine

4. Uracil and adenine; cytosine and guanine

Which of the following hormones contains iodine?

1. Insulin

2. Testosterone

3. Adrenaline

4. Thyroxine

The segment of DNA, that acts as the instrumental manual for the synthesis of the protein is:

Which one of the following does not exhibit the phenomenon of mutarotation?

1. (+) Sucrose

2. (+) Lactose

3. (+) Maltose=

4. (-) Fructose