An Introduction to Molecular Biology/Quiz time

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Quiz No.1[edit]

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1. How does puromycin inhibit protein synthesis?

it binds to A site and stop the elongation.
it affect the peptidyl trasferase activity.
it degrades the t-rna.
it is responsible for loading termination codon

2. The shape of a DNA molecule is

Double helix.
triple helix.
no helix.
linear

3. Cytochrome C releases to cytoplasm during

Apoptosis.
Mitosis.
Meiosis.
Cytosis

4. What is the main reason for cyanide poisoning?

Inhibition of electron transport chain
Inhibition of Fatty acid transport chain.
Inhibition of Nucleic acid transport chain
Inhibition of Fatty acid metabolism

5. DNA replication takes place during

G1
G2
M
S phase

6. The term "Molecular biology" was first used by

Warren Weaver in 1938
Warren Buffet
Watson and Crick
Gregor Mendel

7. RNAPII can exist in two forms

Protein and vitamin
RNAPII0, with a highly phosphorylated CTD, and RNAPIIA, with a nonphosphorylated CTD.
RNAP 1 and RNAP 2
Protein and rna

8. Single letter code for Alanine is

A
B
C
D

9. Single letter code for Phenylalanine is

P
B
C
F

10. Single letter code for Tryptophan is

T
B
C
W

11. In DNA Adenine coupled with

T
G
C
W

12. DNA is a long polymer made from repeating units of

Nucleotides
Nucleosides
Nucleorides
Nucleophyte

13. Topoisomerases are enzymes with

both nuclease and ligase activity.
both polymerase and cutting activity
both transcription and ligase activity
both unwinding and polymerase activity

14. Who could not win the Nobel Prize in Physiology or Medicine for discovery of DNA structure

Franklin
Watson
Crick
Wilkins

15. Who is not associated with discovery of DNA structure

Linus Pauling
Watson
Crick
Wilkins

16. Single letter code for Selenocysteine is

P
B
C
U

17. Where will you keep collagen triple helix in ramchandran plot

Top right
Bottom right
Bottom left
Top left

18. t-RNA gene is synthesized by

RNA polymerase I
RNA polymerase II
RNA polymerase III
DNA polymerase III

19. Micro RNA was first discovered in

Yeast
Bacteria
C. elegans
Mouse

20. Micro RNA generally contain

22 KB nucleotide
22 thousand nucleotide
22 nucleotide
22 million nucleotide

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Quiz No.2[edit]

Point added for a correct answer:   
Points for a wrong answer:
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1. Animal cell doesn't contain

mitochondria
nucleus
cell wall
chromosome

2. Ocher codon is

UAG
UGA
UAA
UUU

3. The term CDKs stands for

cyclin direct kinases
cyclin depen kinases
cyclin-dependent kinases
cyclin-dull kinases

4. In cell cycle term "cdc" stands for

cyclin direct cycle
cell dependent cycle
cell division cycle
cell-dull cycle

5. DNA is a double helix (if true then explain if false then explain)

TRUE.
FALSE.

6. m-RNA is a single stranded structure (if true then explain if false then explain)

TRUE.
FALSE.

7. Translation of protein generally occurs in the nucleus, (if true then why and if false then why)

TRUE.
FALSE.

8. tRNA appears like cloverleaf structure ( if true then why and if false then why)

TRUE.
FALSE.

9. The first topoisomerase was discovered in

Yeast
Human
E. coli
Mouse

10. The first topoisomerase was discovered by

James Watson
James Xang
James C. Wang
Crick

11. Dideoxynucleotide Chain-termination methods was discovered by

James Watson
James Xang
Frederick Sanger
Crick

12. PCR methods typically amplify DNA fragments of up to

10 bp
100 bp
10 kb
10 mb

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Note[edit]

Dear Readers

If you have problem regarding any question in quiz please let me know.

Thanks

with regards

kaushlendra tripathi