The zwitterion is shown by: 
 

1. Only A

2. Only B

3. Both A and C

4. A, B and C

The compound shown below:

1. is a component of ATP molecule
2. is most commonly found in ori region of DNA
3. can have enzymatic activity
4. may be a component of cell membrane

All the following statements about cellulose are
correct, except

1. Cellulose is homopolymer

2. it is the most abundant organic molecule in the
biosphere

3. It is branched polymer of $\mathrm{\beta }$ -glucose

4. It has $\mathrm{\beta }$ 1-4 glycosidic bonds

Which element is present negligible in human body?

1. O

2. C

3. H

4. Si

"Ramachandran plot" is used to confirm the structure of:

1. RNA

2. Proteins

3. Triacylglycerides

4. DNA

Prosthetic groups differ from co-enzymes, in which:

Which of the following organic compounds is the main constituent of Lecithin?

1. Arachidonic acid

2. Phospholipid

3. Cholesterol

4. Phosphoprotein

Identify two amino acids that contain sulphur:

1. Asparagine and Glutamine

2. Lysine and arginine

3. Proline and hydroxyproline

4. Cysteine and methionine

_______________ are organic compounds that are not directly involved in the normal growth, development, or reproduction of organisms.

(1) essential metabolites

(2) primary metabolites

(3) secondary metabolites

(4) endogenous metabolites

Identify the correct statement regarding the structure of a molecule shown in the given diagram:
   

I. It is an alpha amino acid
II. The configuration shown is called zwitterion
1. Only I
2. Only II
3. Both I and II
4. Neither I nor II