GMS 6108 Exam 2 questions well answered to pass

GMS 6108 Exam 2 questions well
answered to pass

Main protein in Flagella - correct answer ✔✔Flagellin (approx. 20,000 copies)



3 types of flagella - correct answer ✔✔1. No flagella

2. Monoicous/multiple polar

3. Peritrichous



Counterclockwise spin of flagella - correct answer ✔✔Swim



Clockwise spin of flagella - correct answer ✔✔Tumble



Ion-powered motor - correct answer ✔✔H+, Na+



3 general parts of flagella - correct answer ✔✔1. Basal body/engine/motor

2. Hinge/joint/drive shaft

3. Propeller/filament



1. Basal body - correct answer ✔✔- Engine

- Includes:

I. rings

II. motor

III. T3SS

IV. rod



2. Hinge/Joint - correct answer ✔✔Includes:

, I. Hook



3. Propeller/filament - correct answer ✔✔Includes:

I. Flagellin



Flagella biosynthesis: Genetics

Class I - correct answer ✔✔flhDC



Flagella biosynthesis: Genetics

Class II - correct answer ✔✔Expressed with FlhD4C2 using σ70



Flagella biosynthesis: Genetics

Class III - correct answer ✔✔Flagellum, expressed using σ28 (FliA, RpoF)



Class I flhDC - correct answer ✔✔Transcriptional regulator involved with Class II expression.



(Once flhDC regulator has been made, Class II genes are turned on *in conjunction with σ70)



Flagella biosynthesis: Regulation

Class I - correct answer ✔✔Class I flhDC regulated by:

1. H-N

2. Catabolite repression

3. CsrA



Class I flhDC regulation:

H-N - correct answer ✔✔DNA binding protein that changes DNA coiling/topology.



Class I flhDC regulation: