Which of the following is not a secondary metabolite?

1. Antibiotics

2. Vitamins

3. Carotenoids

4. Morphine

Which of the following elements is present in higher proportion [% weight of the total] in Earth's crust with respect to the average composition of a human body?

1. Carbon

2. Nitrogen

3. Sulfur

4. Magnesium

A glycosidic bond connects:

The K_m value of an enzyme denotes the substrate concentration at which the enzyme catalyzed reaction:

1.  Reaches V_max

2.  Shows decline in the rate of reaction

3.  Attains ½ V_max

4.  Finally stops

The “primary structure” of a protein refers to:

1. coiling due to hydrogen bonding between amino acids

2. the alpha helix or pleated sheets

3. the side groups of the amino acids

4. the number and sequence of amino acids

C’ represents carbon of

1.sugar of nucleotides

2.Nitrogenous bases of nucleotides

3.Both 1 and 2

4.None of the above

In proteins, amino acids are linked by  a type of

1.Acetyl bond

2.Amide bond

3.Ester bond

4.Glycosidic bond

The formation of amide bond shows which type of reaction

1.Substitution reaction

2.Elimination reaction

3.Addition reaction

4.Rearrangement reaction

Which of the following is true about compounds present in acid soluble pool?

1.They have molecular weight ranging from 18 to 800 Daltons

2.They are called as micromolecules

3.They are called as Biomolecules

4.All of the above

Which of the following is true about compounds present in acid insoluble pool?

1.They have molecular weight ranging from 10,000 Daltons and above except lipids

2.They are called as Macromolecules

3.They are called as Biomacromolecules

4.All of the above