ch 7 pt 2

Question 1

mRNA is decoded in sets of __ nucleotides

Answer 1

3

Question 2

tRNA molecules

Answer 2

match amino acids to codons in mRNA

Question 3

how do stop codons work

Answer 3

no tRNA bind to those codons so it’s stops the production of anything else

Question 4

understand

Answer 4

okay

Question 5

where are ribosomes located

Answer 5

cytoplasm in eukaryotic cells

Question 6

understand

Answer 6

okay

Question 7

what makes up the eukaryotic ribosome

Answer 7

4 rRNAs and over 80 smaller proteins (large subunit 3 rRNAs, small 1 rRNA)

Question 8

each ribosome has

Answer 8

a binding site for a mRNA molecule and three binding sites for tRNAs

Question 9

understand

Answer 9

okay

Question 10

what bind to a stop tRNA

Answer 10

a release factor, that signals the release of the polypeptide chain

Question 11

what is this

Answer 11

polyribosome

Question 12

tRNA molecules contain unusual versions of

Answer 12

uracil

Question 13

what charges tRNA with the right amino acid

Answer 13

aninoacyl tRNA synthetases

Question 14

___________ is a 72-amino acid tag that is added to proteins that need to be degraded