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1
MHT CET (PCB) 2025 9th April Evening Shift
MCQ (Single Correct Answer)
+1
-0

Exons on hnRNA codes for $\qquad$

A

lipid

B

sugar

C

protein

D

phospholipid

2
MHT CET (PCB) 2025 9th April Evening Shift
MCQ (Single Correct Answer)
+1
-0

In an operon, when repressor protein attaches to the operator then __________ .

A

the operator is switched on.

B

the structural genes are expressed.

C

the chemical inducer is synthesized.

D

the structural genes are not expressed.

3
MHT CET (PCB) 2025 9th April Evening Shift
MCQ (Single Correct Answer)
+1
-0

Identify the correct sequence of steps in Hershey and Chase's experiment.

A

Infection $\rightarrow$ Centrifugation $\rightarrow$ Blending $\rightarrow$ Detection of radioactivity.

B

Centrifugation $\rightarrow$ Infection $\rightarrow$ Blending $\rightarrow$ Detection of radioactivity

C

Infection $\rightarrow$ Blending $\rightarrow$ Centrifugation $\rightarrow$ Detection of radioactivity

D

Blending $\rightarrow$ Infection $\rightarrow$ Centrifugation $\rightarrow$ Detection of radioactivity

4
MHT CET (PCB) 2025 9th April Morning Shift
MCQ (Single Correct Answer)
+1
-0

Which type of mutation causes sickle cell anaemia?

A

Inversion

B

Duplication

C

Frame - shift

D

Point

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