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

If the length of a DNA molecule is 1.1 metres, what will b the approximate number of base pairs?

A
3.3 $$\times$$ bp 109
B
6.6 $$\times$$ bp 109
C
3.3 $$\times$$ bp 106
D
6.6 $$\times$$ bp 106
2
NEET 2022 Phase 1
MCQ (Single Correct Answer)
+4
-1

In an E. Coli strain i gene gets mutated and its product can not bind the inducer molecule. If growth medium is provided with lactose, what will be the outcome?

A
Only z gene will get transcribed
B
z, y, a genes will be transcribed
C
z, y, a genes will not be translated
D
RNA polymerase will bind the promoter region
3
NEET 2022 Phase 1
MCQ (Single Correct Answer)
+4
-1

Ten E.coli cells with 15N - dsDNA are incubated in medium containing 14N nucleotide. After 60 minutes, how many E.coli cells will have DNA totally free from 15N?

A
20 cells
B
40 cells
C
60 cells
D
80 cells
4
NEET 2021
MCQ (Single Correct Answer)
+4
-1
DNA strands on a gel stained with ethidium bromide when viewed under UV radiation, appear as
A
Bright blue bands
B
Yellow bands
C
Bright orange bands
D
Dark red bands
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