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 :
B and D only
A and B only
B and C only
A and D only
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?
Thalassemia
Sickle-cell anaemia
Phenylketonuria
Haemophilia
$$ \text { Match List I with List II: } $$
| $$ \text { List I } $$ |
$$ \text { List II } $$ |
||
|---|---|---|---|
| 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 |
A-III, B-II, C-IV, D-I
A-IV, B-II, C-I, D-III
A-II, B-III, C-IV, D-I
A-II, B-III, C-I, D-IV
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:
$\mathrm{A}, \mathrm{C}, \mathrm{E}, \mathrm{B}, \mathrm{D}$
$\mathrm{C}, \mathrm{A}, \mathrm{B}, \mathrm{D}, \mathrm{E}$
$\mathrm{A}, \mathrm{D}, \mathrm{B}, \mathrm{E}, \mathrm{C}$
$C, E, D, B, A$
NEET Papers
All year-wise previous year question papers