NEET Biology Practice Test on Biomolecules

Practice test on ‘Biomolecules’.  Choose the best answer from the four options given. When you've finished answering as many of the questions as you can, scroll down to the bottom of the page and check your answers by clicking ' Score'. Percentage score will be displayed along with right answers.

1.Which of the following are not secondary metabolites in plants?
Morphine, Codeine
Amino acids, Glucose
Rubber, Gums
Vinblastine, Curcumin

2. Following are the statements with reference to 'lipids'.

(a) Lipids having only single bonds are called unsaturated fatty acids.

(b) Lecithin is a phospholipid.

(c) Trihydroxy propane is glycerol.

(d) Palmitic acid has 20 carbon atoms including carboxyl carbon.

(e) Arachidonic acid has 16 carbon atoms.

Choose the correct answer from the options given below.
(a) and (b) only
(c) and (d) only
(b) and (c) only
(b) and (e) only

3.Match the following

Choose the correct answer fro the options given below.

A-4, B-1, C-2, D-3
A-1, B-4, C-3, D-2
A-2, B-1, C-4, D-3
A-4, B-3, C-1, D-2

4.Read the following statements on lipids and findout correct set on statements:

a)Lecithin found in the plasma membrane is a glycolipid

b)Saturated fatty acids possess one or more c=c bonds

c)Gingely oil has lower melting point, hece remains as oil in winter

d)Lipids are generally insoluble in water but soluble in some organic solvents

e)When fatty acids is esterified with glycerol, monoglycerides are formed

a,b, and c only
a,d, and e only
c,d, and e only
a,b, and d only

5.A dehydration reaction links two glucose molecules to produce maltose.If the formula for glucose is C6 H12 O6 then what is the formula for maltose?
C12H20O10
C12H24O12
C12H22O11
C12H24O11

6. Match the following

a-iii, b-ii, c-iv, d-i
a-iv, b-ii, c-i, d-iii
a-ii, b-iv, c-iii, d-i
a-iv, b-iii, c-i, d-ii

7.Given below are two statements:
Statement I: A protein is imagined as a line, the left end represented by first amino acid (C-terminal) and the right end represented by last amino acid (N-terminal).

Statement II: Adult human haemoglobin, consists of 4 subunits (two subunits of α type and two subunits of β type).

In the light of the above statements, choose the correct answer from the options given below:

Both Statement I and Statement II are false.
Statement I is true but Statement II is false.
Statement I is false but Statement II is true.
Both Statement I and Statement II are true

8. The two functional groups characteristic of sugars are
hydroxyl and methyl
carbonyl and methyl
hydroxyl and phosphate
carbonyl and hydroxyl

9.Essential amino acids is ----
Glycine
Serine
Phenylalanine
Aspartic acid

10. Secondary metabolites are produced by plants for their-----
nutritive value
defence action
effect on reproduction
growth response
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