1
NEET 2026
MCQ (Single Correct Answer)
+4
-1
Change Language

Which of the following statements are correct with respect to DNA separation, isolation and visualization?

A. The cutting of DNA is done by molecular scissors.

B. The DNA fragments separate according to their size in an agarose gel, upon electrophoresis.

C. The separated DNA fragments can be seen without staining when exposed to UV light.

D. The separated DNA fragments, when stained with ethidium bromide, can be seen in visible light.

Choose the correct answer from the options given below :

A

B and D only

B

A and B only

C

B and C only

D

A and D only

2
NEET 2026
MCQ (Single Correct Answer)
+4
-1
Change Language

Which one of the following disorders is caused by the substitution of Glutamic acid (Glu) by Valine (Val) at the sixth position of the beta globin chain of the haemoglobin molecule?

A

Thalassemia

B

Sickle-cell anaemia

C

Phenylketonuria

D

Haemophilia

3
NEET 2026
MCQ (Single Correct Answer)
+4
-1
Change Language

$$ \text { Match List I with List II: } $$

$$
\text { List I }
$$
$$
\text { List II }
$$
A. Cortisol I. Stimulates the formation of alveoli in mammary glands
B. Aldosterone II. Produces anti-inflammatory reactions
C. Cholecystokinin III. Stimulates reabsorption of $\mathrm{Na}^{+}$ and water from renal tubule
D. Progesterone IV. Stimulates secretion of pancreatic enzymes and bile juice
Choose the correct answer from the options given below:
A

A-III, B-II, C-IV, D-I

B

A-IV, B-II, C-I, D-III

C

A-II, B-III, C-IV, D-I

D

A-II, B-III, C-I, D-IV

4
NEET 2026
MCQ (Single Correct Answer)
+4
-1
Change Language

Arrange the following events occuring in Renin-Angiotensin mechanism in the correct order:

A. Increase in blood pressure and Glomerular filtration rate

B. Reabsorption of $\mathrm{Na}^{+}$and water from distal parts of tubule due to Aldosterone

C. Fall in Glomerular filtration rate

D. Vasoconstriction by Angiotensin II and release of Aldosterone.

E. Renin converts Angiotensinogen into Angiotensin I, followed by Angiotensin II.

Choose the correct answer from the options given below:

A

$\mathrm{A}, \mathrm{C}, \mathrm{E}, \mathrm{B}, \mathrm{D}$

B

$\mathrm{C}, \mathrm{A}, \mathrm{B}, \mathrm{D}, \mathrm{E}$

C

$\mathrm{A}, \mathrm{D}, \mathrm{B}, \mathrm{E}, \mathrm{C}$

D

$C, E, D, B, A$