1-Tavy, who had accompanied Kristina, Courtney and Sarah N. toUtah, decided that she would go fishing on the Green River ratherthan going to Arches National Monument. Before baiting her lure,Tavy decides it would be best to test the NO2- levels of the water.Finding these levels to be much too high3, Tavy realizes
a. That the balance of Nitrosomonas and Nitrobacter must be off inthis river.
b. That excess fertilizer may be running into the Green River
c. That fish in the river may be suffering from NO2-toxicity.
d. All of the above
2-Tavy, after finding elevated NO2- levels, decides to continue herriver expedition by culturing additional aquatic microorganisms.She finds both Leptothrix and Caulobacter species in the river.Both of these bacteria
a. are sheathed.
b. produce motile daughter cells called swarmer cells.
c. are prosthecate bacteria.
d. are nitrifiers.
3. It is a snowy winter evening and James W. decides to curl upwith a cup of tea and some good literature. He reads the followingpassage from EMBO Reports4:
One of these is a vicious little predator called Bdellovibriobacteriovorusâliterally 'bacteria eating'. ââ¦I would say it's anexcellent starting point: many of the features of the system makeit plausible that it would work, but its development would besimilar to that of pharmaceuticals, of which less than 5% finallymake it to market,â Schuster explained. Unlike blockbusterantibiotics, different Bdellovibrio species have very specifictastes in different host bacteria. Schuster's species has apenchant for Pseudomonas aeruginosa, a growing scourge of hospitalson account of its
rapidly emerging resistance to most antibiotics, includingvancomycin.
To what application of Bdellovibrio does this passage refer?
a. To the potential use of Bdellovibrio as a âliving antibioticâwith a high therapeutic index
b. To the use of Bdellovibrio to target certain overusedantibiotics such as vancomycin
c. To the role of this sheathed bacterium in providing a surface onwhich Pseudomonas aeruginosa can form a biofilm
d. To the industrial applications of prosthecate bacteria such asBdellovibrio.
e. All of the above
4. Caulobacter crescentus
a. reproduces by a process called assymetric transverse binaryfission.
b. forms a prostheca called a stalk.
c. forms a holdfast that secretes a âglueâ strong enough to hang anF-250 from a 1
inch ceiling tile.
d. all of the above
e. b and c
5-Brian is putting his mad model making skills to the test anddecides to create a moving model showing motility via an axialfilament. He thus creates all of the following for his modelEXCEPT
a. Amphitrichous flagella that are within the periplasm (surroundedby the outer
membrane)
b. A spiral-shaped, highly flexible cell
c. Peritrichous flagella that form corkscrews.
d. A bipolar stigma
e. A and B
f. C and D
6.Trypanosoma rhodesience
a. is caused by an anaerobic parasite that lacksmitochondria.
b. is nonmotile.
c. causes the acute form of African sleeping sickness
d. all of the above
1-Tavy, who had accompanied Kristina, Courtney and Sarah N. toUtah, decided that she would go fishing on the Green River ratherthan going to Arches National Monument. Before baiting her lure,Tavy decides it would be best to test the NO2- levels of the water.Finding these levels to be much too high3, Tavy realizes
a. That the balance of Nitrosomonas and Nitrobacter must be off inthis river.
b. That excess fertilizer may be running into the Green River
c. That fish in the river may be suffering from NO2-toxicity.
d. All of the above
2-Tavy, after finding elevated NO2- levels, decides to continue herriver expedition by culturing additional aquatic microorganisms.She finds both Leptothrix and Caulobacter species in the river.Both of these bacteria
a. are sheathed.
b. produce motile daughter cells called swarmer cells.
c. are prosthecate bacteria.
d. are nitrifiers.
3. It is a snowy winter evening and James W. decides to curl upwith a cup of tea and some good literature. He reads the followingpassage from EMBO Reports4:
One of these is a vicious little predator called Bdellovibriobacteriovorusâliterally 'bacteria eating'. ââ¦I would say it's anexcellent starting point: many of the features of the system makeit plausible that it would work, but its development would besimilar to that of pharmaceuticals, of which less than 5% finallymake it to market,â Schuster explained. Unlike blockbusterantibiotics, different Bdellovibrio species have very specifictastes in different host bacteria. Schuster's species has apenchant for Pseudomonas aeruginosa, a growing scourge of hospitalson account of its
rapidly emerging resistance to most antibiotics, includingvancomycin.
To what application of Bdellovibrio does this passage refer?
a. To the potential use of Bdellovibrio as a âliving antibioticâwith a high therapeutic index
b. To the use of Bdellovibrio to target certain overusedantibiotics such as vancomycin
c. To the role of this sheathed bacterium in providing a surface onwhich Pseudomonas aeruginosa can form a biofilm
d. To the industrial applications of prosthecate bacteria such asBdellovibrio.
e. All of the above
4. Caulobacter crescentus
a. reproduces by a process called assymetric transverse binaryfission.
b. forms a prostheca called a stalk.
c. forms a holdfast that secretes a âglueâ strong enough to hang anF-250 from a 1
inch ceiling tile.
d. all of the above
e. b and c
5-Brian is putting his mad model making skills to the test anddecides to create a moving model showing motility via an axialfilament. He thus creates all of the following for his modelEXCEPT
a. Amphitrichous flagella that are within the periplasm (surroundedby the outer
membrane)
b. A spiral-shaped, highly flexible cell
c. Peritrichous flagella that form corkscrews.
d. A bipolar stigma
e. A and B
f. C and D
6.Trypanosoma rhodesience
a. is caused by an anaerobic parasite that lacksmitochondria.
b. is nonmotile.
c. causes the acute form of African sleeping sickness
d. all of the above
