Protein synthesis

Question 1

Function of helicase

Answer 1

Unwinds and unzips DNA

Question 2

Where do RNA nucleotides bind to after DNA is unzipped?

Answer 2

Binds to complementary DNA bases in antisense strand

Question 3

Function of RNA polymerase

Answer 3

Joins RNA nucleotides with phosphodiester bonds

Question 4

What causes RNA polymerases to detach?

Answer 4

Stop codon

Question 5

Transcription function

Answer 5

To produce an mRNA (messenger) strand so it detaches from DNA and leaves nucleus.

Question 6

Where does translation occur?

Answer 6

Ribosomes (rRNA)

Question 7

Where does mRNA codons bind to?

Answer 7

Each mRNA codon binds to tRNA molecule with a complementary anticodon.

Question 8

What happens when mRNA codon binds to tRNA anticodon?

Answer 8

tRNA is bound to an amino acid, afterwards a peptide bond is formed between 2 amino acids.

Question 9

When does translation end?

Answer 9

Amino acids are bonded together in a polypeptide chain until a stop codon is reached. Polypeptide is released