Which protein is found in the maximum amount:
1.  Catalase
2.  Zinc carbonic anhydrase
3.  Transferase
4.  RUBISCO

Nucleotides are building blocks of nucleic acids. Each nucleotide is a composite molecule formed by -

1. Base-sugar-OH

2. Base-sugar-phosphate

3. Sugar-phosphate

4. (Base-sugar-phosphate)_n

Three of the following statements about enzymes are correct and one is wrong. Which one is wrong?
 

The figure given below shows the conversions of a substrate into product by an enzyme. In which one of the four options (1-4), the components of the reaction labelled as A, B, C and D are identified correctly:

 Options

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