Gene expression

Question 1

Where does translation occur?

Answer 1

Cytoplasm

Question 2

Describe the structure of an amino acid

Answer 2

Amino group
Carboxyl group
R group
H atom

Question 3

What type of bond occurs between amino acids?

Answer 3

Peptide bonds (form between amino group and carboxyl group)

Question 4

What does degenerate mean?

Answer 4

When more the one triplet codes for the same amino acid

Question 5

How many nucleotides in RNA code for an amino acid?

Answer 5

Three (triplet code)

Question 6

What is the start codon?

Answer 6

AUG (methionine)

Question 7

What are the stop codons?

Answer 7

UAA
UAG
UGA

Question 8

LEARN CHEMICAL STRUCTURES (LOOK AT LECTURE)

Answer 8

DON’T FORGOT TO DO THIS

Question 9

You need to be able to name and state the chemical type of the standard amino acids

Answer 9

whether they are polar or non-polar? Hydrophobic? Basic? Aromatic?

Question 10

Be able to draw

Answer 10

Gly, Ser, Phe (or Tyr), Gln, Lys, Glu, Val

Question 11

What amino acids contain a benzene ring?

Answer 11

Phe and Tyr

Question 12

What amino acid can form disulphide bridges?

Answer 12

Cys

Question 13

How many reading frames are there in DNA?

Answer 13

6 (three on each strand) (see lecture of you don’t understand this)

Question 14

Which is the template and coding strands?

Answer 14

Template top strand 5’ to 3’

coding is bottom 3’ to 5’

Question 15

What is the start codon in DNA?

Answer 15

ATG (Met)