Ap Bio Gene Expression And Regulation

Question 1

Introns

Answer 1

Areas that are cut from primary transcript. Stays IN the nucleus

Question 2

Exons

Answer 2

Are expressed and exit the nucleus

Question 3

Reverse-Transcriptase

Answer 3

Enzyme that covers viral mRNA into DNA to be integrated into host gnome

Question 4

DNA 5’———3’
mRNA? #’——-#’

Answer 4

3’———5’

Question 5

Can regulatory proteins be an activator and repressor?

Answer 5

Yes!

Question 6

Epigenetics changes:

Answer 6

Effect gene expression through reverse able modification of DNA or histones

Question 7

Changes to genetic info of a cell is

Answer 7

Mutations

Question 8

Small scale mutation is how many nucleotides?

Answer 8

1-few

Question 9

Point mutation

Answer 9

Changes single nucleotide pairs

Question 10

Missense Mutation

Answer 10

Change of 1 amino acid pair

Question 11

Nonsense Mutation

Answer 11

Changes amino acids to STOP codon

Question 12

Silent mutation

Answer 12

No phenotypes can be seen, so silent.

Question 13

Mutations can be:

Answer 13

Crucial, no affect, similar to OG, and less active protein

Question 14

Insertion and Deletion

Answer 14

Adds and losses of nucleotide pairs

Question 15

Frameshift

Answer 15

Extensive missense or immediate nonsense

Question 16

3 nucleotide-pair deletion

Answer 16

Leads to extra amino acid

Question 17

Physical and chemical agents called

Answer 17

Mutagens

Ex: UV rays