4.4

Question 1

codon def

Answer 1

a triplet that codes for a amino acid

Question 2

start amino acid

Answer 2

MET

Question 3

where does translation take place

Answer 3

the ribosome

Question 4

what are the 3 sites

Answer 4

A site
P site
E site

Question 5

A site function

Answer 5

matches tRNA to mRNA codon

Question 6

P site function

Answer 6

holds tRNA and growing polypeptide chain

Question 7

E site function

Answer 7

empty tRNA leaves ribosome

Question 8

mRNA function

Answer 8

contains code for amino acid sequence

Question 9

tRNA function

Answer 9

transfers amino acids and contains anti-codons

Question 10

rRNA function

Answer 10

facilitate the matching of mRNA and tRNA

Question 11

mutation def

Answer 11

change in DNA sequence

Question 12

2 main types of mutations

Answer 12

point and frameshift

Question 13

causes for mutations

Answer 13

DNA replication
Mutagens
viral infections

Question 14

point mutation def

Answer 14

substitution of a single base

Question 15

frameshift mutation

Answer 15

shift in reading frame

Question 16

insertion is when you ____ a base

Answer 16

add

Question 17

deletion is when you _____ a base

Answer 17

remove

Question 18

a silent mutation means _____ changes in amino acid

Answer 18

nothing

Question 19

a missense mutation changes ___ amino acid

Answer 19

one