RNA

Question 1

Role of RNA

Answer 1

DNA transferred to the cytoplasm where it’s translated into proteins

Question 2

Structure of RNA

Answer 2

• ribose
• organic bases
• phosphate group

Question 3

Nitrogen bases found in RNA

Answer 3

• adenine
• guanine
• cytosine
• uracil

Question 4

Structure of mRNA

Answer 4

• long strand

- single helix

Question 5

Role of mRNA

Answer 5

• template for protein synthesis
• posses info in the form of codons
• sequence of codons determined the amino acid sequence of a specific polypeptide that will be made

Question 6

Structure of tRNA

Answer 6

• small molecule
• single stranded chain folded into a clover shape
• 1 end of the chain extends beyond the other which allows tRNA to bind to amino acid easily
• 3 unpaired nitrogen bases

Question 7

What do the 3 unpaired nitrogen base of tRNA form

Answer 7

Anticodon

Question 8

What is tRNA specific to

Answer 8

1 amino acid and has an anticodon that is specific to that amino acid

Question 9

Adaptions of mRNA

Answer 9

Small = move in and out of nucleus into cytoplasm
Contains a series of nucleotides = carry genetic info
Unstable = hydrolysed quickly when no longer needed

Question 10

Adaptions of tRNA

Answer 10

• amino acid binding site = enables it to carry amino acids into cytoplasm
• has an anticodon that is complementary to codons on mRNA = pairing determines the order of amino acids on a polypeptide
• more stable than mRNA = enables it to pick up another amino acid once they have carried one of in a polypeptide