protein synthesis

Question 1

what are the 2 steps of protein synthesis

Answer 1

nuclear (transcript)
cytoplasmic (translation)

Question 2

name the 3 transcription process

Answer 2

1. messenger RNA (mRNA)
2. Ribosomal RNA
   3.Transfer RNA (tRNA)

Question 3

where does the transcription happen?

Answer 3

in the nucleus

Question 4

what gets transcribed?

Answer 4

RNA polymerase transcribes DNA into RNA

Question 5

what happens with the first stage in transcription

Answer 5

messenger RNA (mRNA)
Directs synthesis of polypeptide

Question 6

what happens in the second stage of transcription

Answer 6

Ribosomal RNA
Part of ribosomes

Question 7

what happens in the third stage of transcription

Answer 7

Transfer RNA (tRNA)
Carries amino acids to ribosome for reaction

Question 8

what are the three different RNA that is required in translation

Answer 8

messenger
transfer
ribosomes

Question 9

what does message RNA do

Answer 9

translates from the nucleus (mRNA)

Question 10

what does transfer RNA do

Answer 10

carries amino acids (tRNA)

Question 11

what does ribosomes do

Answer 11

ribosomes to do the actual work containing ribosomal RNA (rRNA)

Question 12

first step in protein synthesis

Answer 12

initiator RNA attaches to a start codon

Question 13

second step in protein synthesis

Answer 13

ribosomal subunits join to form ribosome and initiator tRNA fits into position on the ribosome

Question 14

third step in protein synthesis

Answer 14

anticodon of incoming tRNA pairs with next mRNA codon beside initiator tRNA

Question 15

fourth step in protein synthesis

Answer 15

amino acid on initiator tRNA forms a peptide bond with amino acid beside it

Question 16

fifth step in protein synthesis

Answer 16

tRNA leaves the ribosome
ribosome shifts by one codon;
tRNA binds to newly exposed codon;
steps 3-5 repeat

Question 17

sixth step in protein synthesis

Answer 17

protein synthesis stops when the ribosomes reach stop codon on mRNA