Study the primary structure of a part of a hypothetical protein and choose the correct statements:

l. 1 is Serine

ll. 2 is sulfer containing amino acid and can be methionine

lll. 3 is aromatic amino acid and can be tyrosine

lV. 4 is an acidic amino acid

1. l, ll and lll only

2. l, lll and lV only 

3. ll, lll and lV only

4. l, ll, lll and lV

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

The zwitterion is shown by: 
 

1. Only A

2. Only B

3. Both A and C

4. A, B and C

The four elements making 99 % of living system are:

Glycogen is a polymer of:

An enzyme brings about:

The backbone of a DNA molecule is formed by:

A glycosidic bond connects:

The inhibition of succinic dehydrogenase by malonate is an example of:

The enzymes that catalyse removal of groups from substrates by mechanisms other than hydrolysis leaving double bonds are called as: