1
NEET 2022 Phase 1
MCQ (Single Correct Answer)
+4
-1
Change Language

Which one of the following statement is not true regarding gel electrophoresis technique?

A
The process of extraction of separated DNA strands from gel is called elution.
B
The separated DNA fragments are stained by using ethidium bromide.
C
The presence of chromogenic substrate gives blue coloured DNA bands on the gel.
D
Bright orange coloured bands of DNA can be observed in the gel when exposed to UV light.
2
NEET 2022 Phase 1
MCQ (Single Correct Answer)
+4
-1
Change Language

Production of Cucumber has increased manifold in recent years. Application of which of the following phytohormones has resulted in this increased yield as the hormone is known to produce female flowers in the plants:

A
ABA
B
Gibberellin
C
Ethylene
D
Cytokinin
3
NEET 2022 Phase 1
MCQ (Single Correct Answer)
+4
-1
Change Language

What amount of energy is released from glucose during lactic acid fermentation?

A
Approximately 15%
B
More than 18%
C
About 10%
D
Less than 7%
4
NEET 2022 Phase 1
MCQ (Single Correct Answer)
+4
-1
Change Language

In old trees the greater part of secondary xylem is dark brown and resistant to insect attack due to :

(a) secretion of secondary metabolities and their deposition in the lumen of vessels.

(b) deposition of organic compounds like tannins and resins in the central layers of stem.

(c) deposition of suberin and aromatic substances in the outer layer of stem.

(d) deposition of tannins, gum, resin and aromatic substances in the peripheral layers of stem.

(e) presence of parenchyma cells, functionally active xylem elements and essential oils.

Choose the correct answer from the options given below :

A
(a) and (b) only
B
(c) and (d) only
C
(d) and (e) only
D
(b) and (d) only
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