EXAM 3

Question 1

tRNA

Answer 1

transfer RNA

Question 2

what does the tRNA bind to?

Answer 2

the anticodon on tRNA binds to the complementary codon on the mRNA

Question 3

what is an uncharged tRNA?

Answer 3

tRNA without the amino acid

Question 4

protein machine responsible for protein synthesis

Answer 4

ribosome

Question 5

what are the two subunits of ribosomes?

Answer 5

30S (small) and 50S (large)

Question 6

the chemical reaction facilitated by a ribosome is called

Answer 6

dehydration synthesis

Question 7

what kind of bond links amino acids?

Answer 7

peptide bond

Question 8

what does polycistronic mean?

Answer 8

encoding several different proteins translated from the same mRNA molecule

Question 9

what is the advantage of not having a nucleus?

Answer 9

ribosomes hav access to the mRNA while its being created, multiple proteins can be made rapidly from each mRNA, faster protein assembly

Question 10

what happens in the initiation of translation?

Answer 10

Initiation factors bind ribosome to the ribosome binding site known as Shine Delgarno Sequence
- translation starts at AUG start codon

Question 11

what happens in the elongation of translation?