?

Suppose you need to prepare anti-rattlesnake venom. How would you get the antibodies?

A. Vaccinate a horse with inactivated venom

B. From a different snake

C. From a rattlesnake

D. From a person who had been bitten by the snake

E. None of the above

Yet I still need the answer.. :) I think I have a pretty good idea, But I would like a second opinion. 10 Points!

Which of the following would not affect the ability of Streptococcus mutans to attach to teeth

A. The lack of a glycocalyx.

B. The lack of the enzyme glucosyltransferase.

C. The inability to form dextran.

D. The absence of Actinomyces, a bacterium that can be part of dental plaque.

E. The lack of glucose.

Thanks so much!

All of the following are motile; which does not have flagella?

A. Pseudomonas

B. Enterics

C. Spirochetes

D. Spirilla

E. None of the above

Thanks so much!

I am seeing at least two possible correct answers for this question and now I'm probably over-analyzing it. 10 Points to the correct answer who can explain.. Thanks!

Which of the following statements is true?

A. At least one member must benefit in a symbiotic relationship.

B. Members of a symbiotic relationship cannot live without each other.

C. Symbiosis refers to different organisms living together.

D. Symbiosis refers to different organisms living together and benefiting from each other.

E. A parasite is not in symbiosis with its host.

Emergence of infectious diseases can be due to all of the following except

A. Antibiotic resistance.

B. Climatic changes.

C. Digging up soil.

D. Microbes trying to cause disease.

E. Travel.

Ok, so I don't think I can give more than 10 points, oh well :) I've narrowed this down to 2 options, looking for some confirmation. I know for sure it's not B,C or D. Thanks!!

All of the following are true of the fungi except

A. they can grow in high concentrations of sugars and salts.

B. diseases caused by fungi are called mycoses.

C. identification of fungi usually involves examination of spore types.

D. they are capable of metabolizing complex carbohydrates found in newspaper and wood.

E. they are strict aerobes.

10 Point to the correct answer... looking for some reassurance :)

Which statement is incorrect?

A. The variable region of a heavy chain binds with antigen.

B. The variable region of a light chain binds with antigen.

C. The Fc region attaches to a host cell.

D. The constant region of a heavy chain is the same for all classes of antibodies.

E. None of the above.

I see two possible right answers here, so I must be missing something. Looking for a second opinion, thanks!

Which of the following statements is true?

A. Interferon is an antiviral protein.

B. Interferon promotes phagocytosis.

C. Interferon causes cell lysis.

D. Interferon acts against specific viruses.

E. Interferon attacks invading viruses.

A. some microorganisms can't be cultured in laboratory media

B. some microorganisms don't cause the same disease in laboratory organisms

C. seom microorganisms cause different symptoms under different conditions

D. some microorganisms can't be obsrerved

E. Not all diseases are caused by microorganisms

Just looking for reinforcement... 10 points for correct answer, thanks!

I'm working on categorizing several different bacteria based on whether they are Intracellular or not (I.E. work by taking over host cells). I know E. Coli is a regular part of our intestinal tract, but what about Pathogenic E. Coli... Intracellular?

Salmonella typhimurium also I was wondering about. I'm pretty sure this is more of a parasite, but if I'm wrong, let me know :) Thanks!

A. the rumen of a cow

B. a hot spring

C. freshly fertilized soil

D. an evaporating salt pond

E. a compost pile

10 Points for the correct answer and a bit of an explanation! Thank you much!

A. Cause diseases.

B. Are found in a certain location on the host.

C. Are acquired by direct contact.

D. Are present for a relatively short time.

E. None of the above.

Thanks, 10 points to the correct answer!

A. The normal microbiota can prevent pathogens from causing an infection.

B. Normal microbiota have a commensalistic or mutualistic relationship with the human cells that support their growth.

C. Transient microbiota are microbes that are present for various periods and then disappear.

D. Normal microbiota may become opprotunistic pathogens under special conditions.

E. Disease is a normal relationship between normal microbiota and human host cells.

Thanks for the insight!!

A. Lysis of the host cell due to a phage.

B. The period during replication when virions are not present.

C. When the burst time takes an unusually long time.

D. Phage DNA is incorporated into host cell DNA.

E. None of the above.

THANKS for your insight!!!!

A. They rarely have enzymatic activity.

B. The genetic material that encodes most of them is plasmid or prophage associated.

C. They can be converted to toxoids.

D. The exotoxin can work by binding and entering the host cell.

E. They can cause toxemia.

Thanks!!!!

Does anyone know of 3 in-office test that a physican might run to test for tonsilitis? 3 is great, but even one is helpful to get me started... thanks a bunch!

I've made a ceveche with shrimp before, and the shrimp cooks really fast, I know. I want to make one with scallops and cilantro tonight, but I'm sure that the scallops will take a little longer, even thinly sliced. Does anyone know what the minimum -maximum would be to marinade them to cook? Thanks!

Im writing a paper on this topic and despite good research I'm lacking the total word count. If anyone has anything to add, I'd love ya forever. I can see if I've touched on it or not...

What is the importance of Acinetobacter baumanni in infections in the military?

A. Silver nitrate

B. Mercurochrome

C. Merthiolate

D. Copper sulfate

E. Chlorine

Thanks so much!

Which of the following terms describes NH4+ > NO2- > NO3-?

A. Ammonification

B. Denitrification

C. Nitrification

D. Nitrogen fixation

E. None of the above