Ch. 15- Translation

Question 1

mature mRNA is ‘read’ by _____ to synthesize proteins

Answer 1

ribosomes

Question 2

____ are used to ‘read’ the mRNA and transport the appropriate amino acid to the ribosome

Answer 2

tRNA

Question 3

a _____ terminates translation

Answer 3

release factor

Question 4

What does it mean that the genetic code is degenerate?

Answer 4

more than 1 triplet encodes for the same amino acid

Question 5

_____ are found on tRNA and are complementary to the codons

Answer 5

anticodons

Question 6

Watson-Crick pairing rules are relaxed at the ____ base of a codon allows degeneration of the code (what is this called)

Answer 6

3rd base; wobble

Question 7

The open reading frames goes to

Answer 7

start codon to stop codon

Question 8

polypeptide synthesis is carried out from the blank terminus to blank terminus

Answer 8

N to C terminus

Question 9

Aminoacyl Site

Answer 9

where the charged tRNA attaches

Question 10

Peptidyl Site

Answer 10

peptide bond formed

Question 11

Ribosome begins translating at

Answer 11

AUG

Question 12

Kozak sequence

Answer 12

sequence containing AUG

Question 13

When AUG is found by the small ribosomal subunit…

Answer 13

tRNA^fMet added to the P site and the large ribosomal subunit binds

Question 14

Translation termination

Answer 14

no tRNA associated with a stop codon; release factor 1 attaches to A site at the stop codon, release factor 3 in complex with GTP binds to ribosome, GTP is hydrolyzed to GDP and the mRNA, tRNA, and RF’s are released from ribosome

Question 15

How do identify the coding strand

Answer 15

is the strand with the open reading frame

Question 16

Do stop codons have anticodons

Answer 16

no