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NeilMehta wrote:Phylum of photosynthetic bacteria?

The48thYoshi wrote: Explain the impacts of cytoplasmic incompatibility

CI is a phenomenon that results in sperm and eggs that cannot form viable offspring and it is believed that unidirectional CI cannot promote speciation. First introduction to Wolbachia

Ashernoel wrote: Some Q's from my test..

1. What does Phenol destroy in controlling microbial growth?
2. What is the lowest temperature that kills all microbes in liquid suspension for 10 minutes?

and a nice scenario xD

A high profile politician comes into the Emergency Room. He says the political turmoil is affecting his body, as he runs a high fever with headaches and a bad cough, but you do not believe the symptoms are from stress. He started developing symptoms after his wife bought him a fancy raccoon fur coat for his birthday.
3. What is the genus of the disease contracted?
4. What type of the disease did he contract?
5. What was the vector, where did the causative agent come from?
6. What treatment should be used for the politician?
7. What increases cAMP, a second messenger device?
8. Resistance to treatment in this microbial agent can be transferred through what
extracellular structure?

allopathie wrote:

Ashernoel wrote: Some Q's from my test..

1. What does Phenol destroy in controlling microbial growth?
2. What is the lowest temperature that kills all microbes in liquid suspension for 10 minutes?

and a nice scenario xD

A high profile politician comes into the Emergency Room. He says the political turmoil is affecting his body, as he runs a high fever with headaches and a bad cough, but you do not believe the symptoms are from stress. He started developing symptoms after his wife bought him a fancy raccoon fur coat for his birthday.
3. What is the genus of the disease contracted?
4. What type of the disease did he contract?
5. What was the vector, where did the causative agent come from?
6. What treatment should be used for the politician?
7. What increases cAMP, a second messenger device?
8. Resistance to treatment in this microbial agent can be transferred through what
extracellular structure?

1. Phenol deactivates enyzme systems and disrupts the cell wall
2. Thermal death point
3. Bacillus
4. Bacterial (anthrax), inhalation
5. Raccoon/spores from soil, probably
6. Penicillin G
7. Edema factor (forms calmodulin-dependent adenylyl cyclase; thanks AP Bio!)
8. Plasmids encoding beta-lactamase?
(I have no idea if I answered correctly, because anthrax generally shows up in herbivores, but the only other cAMP-inducing bacteria is cholera. Respiratory anthrax sometimes presents with cold/flu like symptoms, so this is my best guess.) 1. Which vaccine was implicated in causing the disease it was trying to prevent, and where has this most recently occurred?

2. What does this image represent? What is a PFU?

allopathie wrote:
In what microbiological organisms are two-component regulatory systems prevalent and why are they important?

Two-component regulatory systems are primarily prevalent in bacteria, mostly gram negative and Cyanobacteria. These systems enable bacteria to sense and chance to multiple environmental stimuli and adapt to their environment

The48thYoshi wrote:Some antibiotic questions
a. What do all penicillin- based drugs have structurally in common?
b. What enzyme is responsible for resistance to penicillin?
c. What are 4 mechanisms of antibiotic resistance?
d. What are two possible downsides to penicillin?
e. Provide the name effect that occurs when antibiotics are used for enteric diseases.
f. Describe the effects of microbial Altruism on antibiotic treatments.

a. All penicillin-based drugs contain a beta-lactam ring.
b. Penicillinase, also known beta-lactamase, confers resistance to penicillin.
c. Antibiotic resistance comes from inactivation/degradation of the antibiotic, mutation of the target site, preventing entry of the antibiotic, and rapid ejection of the substance.
d. Penicillin is eliminated from the body relatively quickly. Some people are also allergic penicillin.
e. antibiotic-associated diarrhea(?)
f. The more resistant members of a population may produce indole, which leads to greater antibiotic resistance among the population.

yang573 wrote:

The48thYoshi wrote:Some antibiotic questions
a. What do all penicillin- based drugs have structurally in common?
b. What enzyme is responsible for resistance to penicillin?
c. What are 4 mechanisms of antibiotic resistance?
d. What are two possible downsides to penicillin?
e. Provide the name effect that occurs when antibiotics are used for enteric diseases.
f. Describe the effects of microbial Altruism on antibiotic treatments.

Answers (Click to Show Hidden Text)

a. All penicillin-based drugs contain a beta-lactam ring.
b. Penicillinase, also known beta-lactamase, confers resistance to penicillin.
c. Antibiotic resistance comes from inactivation/degradation of the antibiotic, mutation of the target site, preventing entry of the antibiotic, and rapid ejection of the substance.
d. Penicillin is eliminated from the body relatively quickly. Some people are also allergic penicillin.
e. antibiotic-associated diarrhea(?)
f. The more resistant members of a population may produce indole, which leads to greater antibiotic resistance among the population.

dysbiosis