6. eukaryotic transcription 1

Question 1

Where are genes which are not usually expressed found?

Answer 1

heterochromatin

Question 2

What does the histone code hypothesis propose?

Answer 2

that specific combinations of chemical modifications to histones and DNA of chromatin help determine chromatin configuration and influence transcription

Question 3

What effect does histone acetylation have?

Answer 3

loosens chromatin structure, promoting initiation of transcription

Question 4

What effect does histone methylation have?

Answer 4

condenses chromatin

Question 5

What effect does histone phosphorylation have?

Answer 5

loosens chromatin

Question 6

Which genes does RNA pol I transcribe? 3

Answer 6

5.8S
28S
18S rRNA genes

Question 7

Which genes does RNA pol II transcribe? 5

Answer 7

all protein-coding genes
snoRNA genes
miRNA genes
siRNA genes
most snRNA genes

Question 8

Which genes does RNA pol III transcribe? 3

Answer 8

tRNA genes
5S rRNA genes
snRNA genes

Question 9

Where is the TATA box found on the pol II promotor

Answer 9

-25

Question 10

What is an example of different Bfs working together?

Answer 10

NFAT and AP-1 - required for productive immune responses