Bacterial Translation

Question 1

In prokaryotes, the start codon for protein synthesis is:

Answer 1

AUG

Question 2

In prokaryotes, translation begins when:

Answer 2

The small subunit of the ribosome binds just upstream of the AUG in a region called the ribosomal binding site

Question 3

Secondary structures in proteins include:

Answer 3

Alpha helices and beta sheets

Question 4

Uncharged tRNA molecules:

Answer 4

Require activation by aminoacyl transfer RNA synthetase

Question 5

tRNA is characterised as having:

Answer 5

None of the above

Question 6

Three codon sequences signal the termination point of a peptide. These are:

Answer 6

TAG, TGA, and TAA

Question 7

Without having recognisable start codons, a molecule of mRNA could potentially have:

Answer 7

Three reading frames

Question 8

Amino-acyl tRNA synthetase is an enzyme that:

Answer 8

Attaches amino acids to tRNAs

Question 9

The wobble effect means that:

Answer 9

All of the above are consequences of the wobble effect

Question 10

Shine-Delgarno sequences:

Answer 10

Are located along the prokaryotic mRNA

Question 11

Which of the following statements about protein translation is not correct?

Answer 11

The anticodon of the tRNA must recognise the codon on the mRNA exactly

Question 12

True or false: coupled transcription-translation is an efficient system that enhances the speed of protein production in eukaryotes.

Answer 12

False

Question 13

A codon is:

Answer 13

Three RNA bases or three DNA bases

Question 14

In bacteria transfer, RNA molecules bind to:

Answer 14

mRNA and amino acids