Match each item in Column I with one item in Column II and chose your answer from the codes given below:
 

Column I (Amino Acid)		Column II (Nature)
I.	Tryptophan	1.	Sulfur-containing
II.	Cysteine	2.	Aromatic
III.	Valine	3.	Basic
IV.	Lysine	4.	Neutral

Options:	I	II	III	IV
1.	1	2	3	4
2.	2	1	4	3
3.	2	1	3	4
4.	1	2	4	3

Given below is the diagrammatic representation of one of the categories of small

molecular weight organic compounds in the living tissues. Identify the category shown

and the one blank component X in it

Category              Component

1. Cholesterol       Guanin

2. Amino acid       NH₂

3. Nucleotide        Adenine

4. Nucleoside       Uracil

Which one of the following pairs of nitrogenous bases of nucleic acids, is wrongly matched

with the category mentioned against it?

1. Thymine, Uracil         - Pyrimidines

2. Uracil, Cytosine         - Pyrimidines

3. Guanine, Adenine      - Purines

4. Adenine, Thymine     - Purines

The inhibition of succinic dehydrogenase by malonate is an example of

1. competitive inhibition

2. non-competitive inhibition

3. allosteric modulation

4. none of the above

In a 50 gm living tissue, what would be the amount of water?

1. 15-25 gm

2. 25-30 gm

3. 35-45 gm

4. 70-90 gm

Which of the following elements is present in very less quantity in the body?

1. K             

2. Ca

3. Mg           

4. Cu

In a normal adult, ascending order of concentration of following molecules is

1.  Na>K>Fe>Cu         

2. Na>K>Cu>Fe

3. Fe>Na>K>Cu             

4. Na>Fe>K>Cu

Match each item in Column I with one item in Column II and chose your answer from the codes given below:

Codes

            I           II         III         IV

1.         1           2           3           4

2.         2           1           4           3

3.         2           1           3           4

4.         1           2           4           3

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 the ATP molecule

2. is most commonly found in ori region of DNA

3. can have enzymatic activity

4. may be a component of the cell membrane