week 2 Flashcards
where does peptidoglycan synthesis occur?
- in the middle of the cell
what is the site of division determine by?
a. MinD
b. MinC
c. MinE
d. FtsZ
FtsZ
microscope perfect to view alive cells and their motility, kight passes through a transparent specimen
a. bright field
b. phase contrast
c. differential interference contrast
d. fluorescenceéconfocal microscopy
phase contrast
If a cell were treated with an antibiotic that destroyed proton motive force, which
processes would immediately stop working properly?
A. LPS biosynthesis
B. Swarming motility in Caulobacter crescentus
C. Swimming motility in Haloquadra walsbyii
D. Peptidoglycan biosynthesis
E. Twitching motility in Escherichia coli
F. Transport of oxygen into the cell
G. Transport of glucose into the cell
The correct answer is B, Caulobacter cresentus is a bacteria
C is an archaea, archaea dont use the PMF
No mention of flagella is escherichia coli
Proton-motive force is to flagella as what is to the
archaellum?
A. PEP
B. Proton motive force
C. Adenosine triphosphate
D. Undecaprenyl pyrophosphate
E. UDP
C
Which of the following is true of pseudomurein and not peptidoglycan?
A. It is sensitive to lysozyme
B. It consists of a disaccharide repeat unit with peptide crosslinks
C. It contains N-acetyltalosaminuronic acid
D. It protects the cell from lysis in hypotonic solutions
C
What protein ensures that the septum forms in the middle
of the cell? (Pick the best answer)
A. MinE
B. FtsZ
C. ZipA
D. MinC
E. FtsI
MinE
provides the ability to collect clear images from a thin section of a thick sample with low background and minimal out-of-focus interference. uses fluorescence
