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Lec 19, 20, 21 Transcription and Translation

Total questions: 10

Worksheet time: 5mins

Name
Class
Date
1.

The enzyme that unwinds DNA in transcription is

a)

Helicase

b)

DNA Polymerase I

c)

RNA Polymerase

d)

DNA Polymerase III

2.

mRNA is produced in a

a)

5'-3' direction

b)

3'-5' direction

3.

mRNA is transcribed off the ...

a)

Coding strand

b)

Leading strand

c)

Template strand

d)

Lagging strand

4.

Which of these is not a post translation modification

a)

Removal of introns

b)

Removal of Met

c)

Cleavage

d)

Formation of disulphide bonds

5.

The 'A site' of a ribosome ....

a)

binds temporarily the growing polypeptide chain

b)

is the exit site

c)

Is involved in positioning the incoming aminoacyl-tRNA

6.

Translation stops at the ....

a)

Terminator sequence

b)

5' end of the mRNA

c)

3' end of the mRNA

d)

Stop codon

7.

If the template DNA strand reads

3’ AAT TAT ACA CGA 5’ . It will be transcribed into ...

a)

5' TTA ATA TGT GCT 3'

b)

5 'UCG UGU AUA AUU 3'

c)

5' UUA AUA UGU GCU 3'

d)

5 'TCG TGT ATA ATT 3'

8.

If the template strand DNA is

5’ GAG GTT AGT AAT 3’ the mRNA will be .....

a)

5' AUU ACU AAC CUC 3'

b)

5' CUC CAA UCA UUA 3'

c)

5' ATT ACT AAC CTC 3'

d)

5' CTC CAA TCA TTA 3'

9.

Using the amino acid table determine the RNA sequence that made this protein (NH2) MET CYS TYR PHE (COOH)

a)

UGC AUG UAC UUC

b)

UAC UGC AUG UUC

c)

UUC UAC UGC AUG

d)

AUG UGC UAC UUC

10.

Amino acids are bound to tRNA by

a)

A specific amino tRNA-synthetase enzyme

b)

Phosphodiester bonds

c)

Hydrogen bonding

d)

The anti-codon loop