Molecular Biology Mock Test 8

10%

Question 1 of 10

1. Transposons are able to move by ___________ mechanism(s).

Question 1 of 10

Question 2 of 10

2. The maternal X-chromosome is inactivated during Dosage compensation.

True

False

Question 2 of 10

Question 3 of 10

3. The first miRNA was identified in C. elegans named __________

DICER

Lin-4

RISC

Lin-2

Question 3 of 10

Question 4 of 10

4. The Intergenic CpGs are more commonly methylated than in the intragenetic region.

True

False

Question 4 of 10

Question 5 of 10

5. The direct repeat within the IS element has a length of __________

3-7 bp

20 bp

11-15 bp

5-11 bp

Question 5 of 10

Question 6 of 10

6. With respect to the methylation of bases which of the following is correct?

Involved in translation

Methyl groups are added to cystine in eukaryotic cells

It results in localized conversion of A-DNA to Z-DNA

Protects against the action of S1 nuclease

Question 6 of 10

Question 7 of 10

7. De-novo methylation is done in the newly synthesized DNA strand at opposite positions of the methylated sites on the parent strand.

False

True

Question 7 of 10

Question 8 of 10

8. The functional product of the Xist gene is ___________

RNA devoid of ORF

mRNA

rRNA

Protein

Question 8 of 10

Question 9 of 10

9. On the mechanism of the movement of transposable elements they are of ___________ types.

Question 9 of 10

Question 10 of 10

10. What is incorrect about plasmid?

Helps in reproduction

They are the genetic material of the bacteria

Serves as the transformation vehicle

Contains stress resistant genes

Question 10 of 10