1
NEET 2021
MCQ (Single Correct Answer)
+4
-1
Following are the statements with reference to 'lipids'.

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

(2) Lecithin is a phospholipid.

(3) Trihydroxy propane is glycerol

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

(5) Arachidonic acid has 16 carbon atoms.

Choose the correct answer from the options given below.
A
(2) and (5) only
B
(1) and (2) only
C
(3) and (4) only
D
(2) and (3) only
2
NEET 2021
MCQ (Single Correct Answer)
+4
-1
Match List-I with List-II

List-I List-II
(a) Allen's Rule (i) Kangaroo rat
(b) Physiological adaptation (ii) Desert lizard
(c) Behavioural adaptation (iii) Marine fish at depth
(d) Biochemical adaptation (iv) Polar seal


Choose the correct answer from the options given below.
A
(a) (b) (c) (d)
(iv) (iii) (ii) (i)
B
(a) (b) (c) (d)
(iv) (ii) (iii) (i)
C
(a) (b) (c) (d)
(iv) (i) (iii) (ii)
D
(a) (b) (c) (d)
(iv) (i) (ii) (iii)
3
NEET 2021
MCQ (Single Correct Answer)
+4
-1
During muscular contraction which of the following events occur?

(1) 'H' zone disappears

(2) 'A' band widens

(3) 'I' band reduces in width

(4) Myosine hydrolyzes ATP, releasing the ADP and Pi.

(5) Z-lines attached to actins are pulled inwards.

Choose the correct answer from the options given below.
A
(2), (4), (5), (1) only
B
(1), (3), (4), (5) only
C
(1), (2), (3), (4) only
D
(2), (3), (4), (5) only
4
NEET 2021
MCQ (Single Correct Answer)
+4
-1
Match List-I with List-II.

List-I List-II
(a) Adaptive radiation (i) Selection of resistant varieties due to excessive use of herbicides and pesticides
(b) Convergent evolution (ii) Bones of forelimbs in Man and Whale
(c) Divergent evolution (iii) Wings of Butterfly and Bird
(d) Evolution by anthropogenic action (iv) Darwin Finches


Choose the correct answer from the options given below.
A
(a) (b) (c) (d)
(i) (iv) (iii) (ii)
B
(a) (b) (c) (d)
(iv) (iii) (ii) (i)
C
(a) (b) (c) (d)
(iii) (ii) (i) (iv)
D
(a) (b) (c) (d)
(ii) (i) (iv) (iii)
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