Unit 6

Question 1

DNA —>RNA

Answer 1

Transcription; occurs in nucleus

Question 2

RNA —> protein

Answer 2

Translation; ribosomes

Question 3

Purine

Answer 3

Adenine and guanine

Question 4

Pyrimidines

Answer 4

Thymine, cytocine, Uracil

Question 5

DNA polymerase

Answer 5

Reads DNA in 3’ - 5’ builds new strand from 5’ to 3’

Question 6

Non coding vs coding strand

Question 7

Modifications to RNA strand

Answer 7

Add poly A tail to 5’
Add GTP cap to 3’
Remove introns leave exons

Question 8

MRNA

Answer 8

Messenger RNA carry the message for the correct amino acid

Question 9

TRNA

Answer 9

Carry amino acids to ribosome

Question 10

rRNA

Answer 10

Unzips and creates polypeptide

Question 11

Retrovirus

Answer 11

Reverse transcriptase RNA —> DNA —> RNA —> [protein

Question 12

RNA polymerase

Answer 12

Attaches to promotor and reads the operon

Question 13

Lac operon

Answer 13

Requires molecule in order to get repressor off and initiate running through the operon
In procaryotes

Question 14

Gene expression

Answer 14

In eukaryotes with enhancers, promotors, and coding regions

Question 15

Nonsense

Answer 15

First nitrogen base

Question 16

Missense

Answer 16

Second nitrogen base

Question 17

Mutations

Answer 17

Primary source of genetic variation