Which of the following set of coenzymes are nucleotides of vitamin niacin ?

1. NAD, NADP

2. FMN, FAD

3. ATP, ADP

4. ATP, FAD

Study the reaction given below

${\mathrm{CO}}_2+{\mathrm{H}}_2\mathrm{O}\stackrel{\mathrm{Enzyme}}{\rightleftarrows }{\mathrm{H}}_2{\mathrm{CO}}_3$

In absence of any enzyme this reaction is very slow, with 200 molecules of H2CO3 formed in one hour. In presence of an enzyme the reaction speeds up dramatically with about 600,000 molecules formed every second. Name the enzyme which has accelerated up the reaction by 10 million times.

1. Ribozyme

2. Carbonic anhydrase

3. Catalase

4. Peroxidase

All enzymes are proteins except

1. Trypsin

2. Pepsin

3. Steapsin

4. Ribozyme and Ribonuclease-P

Which of the following secondary metabolites is a polymeric substance?

1. Ricin

2. Monoterpenes

3. Curcumin

4. Rubber

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

Antibodies that help to fight infectious agents are

1. Polysaccharides

2. Amino acids

3. Proteins

4. Glucose

Which of the following is mismatched? 

Cotton fibre is made up of

As starch is related to plant body, which of the following polysaccharides is related to animal body ?

Plant cell walls are made of