L17

Question 1

What is translation?

Answer 1

Synthesis of proteins by ribosomes using mRNA as a set of instructions

Question 2

what is the start codon?

Answer 2

AUG

Question 3

What does tRNA do?

Answer 3

Transfers free amino acids into ribosome for translation

Question 4

What is the function of Aminoacyl tRNA synthetase?

Answer 4

-tRNA Charging

-Brings corresponding pairs together and joins them to form charged tRNA

Question 5

What are the 3 stages of transcription?

Answer 5

Initiation, elongation, termination

Question 6

What is the A site in ribosomes?

Answer 6

Binds aminoacyl tRNA (charged)

Question 7

What is P site of RNA

Answer 7

Where peptide bonds are made, with exit tunnel at the top for polypeptide

Question 8

What is the ribosome E site?

Answer 8

-Where uncharged tRNA exits ribosome

Question 9

What is translation, initation?

Answer 9

-mRNA pass through small subunit until start codon is found
-charged tRNA for start codon binds to P site
-Large ribosomal subunit attaches

Question 10

What is translation elongtation?

Answer 10

• complementary charged tRNA enters A site
  -transfer of amindo acid from P site tRNA onto A forming polypeptide bond
  -Uncharged tRNA exits and everything moves down a codon, allow the process to repeat

Question 11

What is translation termination?

Answer 11

-ribosome reaches stop codon
-polypeptide chain detaches from tRNA and is released