Metabolic Regulation (Part 2)

Question 1

What is quorum sensing?

Answer 1

Responding to density

Question 2

What processes are regulated by quorum sensing?

Answer 2

Toxin production in pathogens, light emission, biofilms, antibiotic production, and sporulation

Question 3

Autoinducer

Answer 3

Signal molecule, acyl homoserine lactone (AHL)

Question 4

What are heat shock proteins used for?

Answer 4

They prevent protein aggregation and are used as chaperone proteins

Question 5

RpoH

Answer 5

Alternative sigma factor

Question 6

DnaK

Answer 6

Inactivates RpoH under normal temperatures

Question 7

RpoH controls what?

Answer 7

Expression of cytoplasmic proteins under heat shock

Question 8

RpoE controls what?

Answer 8

Expression of periplasmic and membrane proteins under heat shock

Question 9

DnaK

Answer 9

Inactivates RpoH under normal temperatures

Question 10

What is the CRISPR antiviral defense system?

Answer 10

Clustered Regularly Interspaced Short Palindromic Repeats-memory bank of viral sequences

Question 11

What are riboswitches?

Answer 11

Catalytically active RNA molecules

Question 12

What are some examples of riboswitches?

Answer 12

Thiamine, riboflavin, cobalamin, some amino acids, purines, and peptidoglycan precursor