Molecular Biology Mock Test 5

10%

Question 1 of 10

1. The second transesterification reaction occurs between __________

The 5’ splicing site of intron and 3’ end of exon

The 3’ splicing site of intron and the branch point site

The 3’ splicing site of intron and 5’ splice site of intron

The 5’ end of exon and the 3’ splice site

Question 1 of 10

Question 2 of 10

2. The mitochondrial mRNA code for methionine is _____________

AGA

UAA

AUG

AUA

Question 2 of 10

Question 3 of 10

3. RNA genomes were first discovered in ___________ viruses.

Bacterial

Animal

Plant

Fungal

Question 3 of 10

Question 4 of 10

4. The viral genome contains which of the following characteristic sequences?

LINE

SINE

LTRs

Transposons

Question 4 of 10

Question 5 of 10

5. Mouse β – globin gene has __________ introns.

Question 5 of 10

Question 6 of 10

6. In case of mitochondrial genetic code UGA is a ____________ codon.

Arginine

Stop

Tryptophan

Proline

Question 6 of 10

Question 7 of 10

7. The 3’ CCA terminus is exceptionally added by the RNA polymerase during transcription.

False

True

Question 7 of 10

Question 8 of 10

8. About how many “A” are added to the nascent RNA in the 5’ end during Polyadenylation?

200

300

100

Question 8 of 10

Question 9 of 10

9. The stop codon on the mRNA is read by __________

Ribosome

mRNA

tRNA

cRF1

Question 9 of 10

Question 10 of 10

10. Which of the following is not a function of reverse transcriptase?

RNase H

DNA dependent DNA polymerase

Exonuclease

RNA dependent DNA polymerase

Question 10 of 10