Antibodies that help to fight infectious agents are

1. Polysaccharides

2. Amino acids

3. Proteins

4. Glucose

The tertiary structure of proteins can be destroyed by

1. High energy radiations

2. High temperature

3. Drastic changes in pH

4. All of these

Which of the following statement is false regarding proteins?

1. A protein is heteropolymer and not a homopolymer

2. Collagen is the most abundant protein in the animal world

3. RuBisCO is the most abundant protein in the whole biosphere

4. The first amino acid in the polypeptide chain is called as C-terminal amino acid and the last amino acid is called as N-terminal amino acid

Which of the following is present in acid insoluble fraction?

1. Glucose

2. Fructose

3. Alanine

4. Lipid

Which of the following secondary metabolites is a polymeric substance?

1. Ricin

2. Monoterpenes

3. Curcumin

4. Rubber

Which of the following is the most abundant element present in human body?

1. Carbon

2. Hydrogen

3. Oxygen

4. Nitrogen

Which of following is a secondary metabolits as well as a drug?

1. Concanavalin A

2. Vinblastine

3. Diterpenes

4. Ricin

Chitin present in the exoskeletons of arthropods is

1. Protein

2. Polysaccharide

3. Lipid

4. Derived monosaccharide

The 3' - 5' phosphodiester linkages inside polynudeotide chain serve to join

1. One DNA strand with the other DNA strand

2. One nucleoside with another nucleoside.

3. One nucleotide with another nucleotide

4. One nitrogenous base with pentose sugar

All enzymes are proteins except

1. Trypsin

2. Pepsin

3. Steapsin

4. Ribozyme and Ribonuclease-P