Genetic Code And Protein Synthes

Question 1

———-are DNA nucleotides organized in a three latter codes

Answer 1

Codons

Question 2

———-is a collection of codons

Answer 2

Genetic code

Question 3

There are ——- possible triplet codons and ——code for amino acids

Answer 3

64
61

Question 4

AUG codes for ———and it is a ———codon

Answer 4

Methionine
It is a start codon

Question 5

State the nonsense codons utilized in the cell as termination signals

Answer 5

UGA UAG UAA

Question 6

Multiple codes coding for the same amino acid is refered to as

Answer 6

Degeneracy

Question 7

Apart from serine which other amino acids have 6 codons coding for them

Answer 7

Leucine and arginine

Question 8

A codon comprises of ——

Answer 8

Three nucleotides

Question 9

Apart methionine which other amino acid has a single codon

Answer 9

Tryptophan

Question 10

Codons representing the same amino acids or chemically similar amino acids tend to have different sequences true or false ,give a reason for your answer

Answer 10

False ,they tend to have similar sequences

Question 11

A specific codon codes for only one specific amino acid true or false

Answer 11

True

Question 12

Translation from mRNA requires an adaptor molecule called

Answer 12

tRNA

Question 13

The adenosine residues are added to the 3’ end by ——?

Answer 13

Poly adenosine polymerase

Question 14

mRNA is formed by the enzyme —-?

Answer 14

RNA POLYMERASE 2

Question 15

The key enzyme for transcription is

Answer 15

RNA POLYMERASE

Question 16

State the function of
RNA POLYMERASE 1
RNA POLYMERASE 2 and
RNA POLYMERASE 3 in eukaryotes

Answer 16

RNA POLYMERASE 1: syntheses preribosomal RNA
RNA polymerase 2:syntheses mRNA
AND FINALLY
RNA POLYMERASE 3 syntheses tRNA