Week Nine (Regulation)

Question 1

Prokaryotic regulators

Answer 1

Operons

Question 2

Histone accetlyation

Answer 2

Loosen chromatin structure promoting initiation of transcription

Question 3

DNA methylation

Answer 3

Condenses chromatin (reducing transcription)

Question 4

Control elements

Answer 4

Noncoding DNA serve as transcription binding sites (interaction with transcription factors)

Question 5

Transcription factors inhibiting

Answer 5

Act as repressors directly or indirectly (influencing chromatin structure)

Question 6

Post transcriptional regulation

Answer 6

Fine tune gene expression as response to environment

Question 7

RNA processing

Answer 7

Alternative splicing (different mRNA from same primary transcript)

Question 8

Blocking initiation of translation

Answer 8

Regulatory proteins bind to RNA

Question 9

mRNA degradation

Answer 9

Lifespan of mRNA

Question 10

Protein degradation

Answer 10

Cells mark protein with ubiquitin which is recognized by proteosome

Question 11

Noncoding (rRNAs and tRNAs)

Answer 11

Parts of genome transferred to these regions regulating gene expression at translation and chromatin configuration

Question 12

MicroRNAs

Answer 12

Degrade mRNA or block translation

Question 13

Small interferring RNA

Answer 13

Inhibit gene expression