40) Which of the following bacteria, often found in poultry, is responsible for the most common bacterial gastroenteritis in the United States, usually accompanied by frequent, bloody diarrhea? A) Borrelia recurrentisB) Campylobacter jejuniC) Rickettsia typhiD) Helicobacter pylori

34) During pregnancy, which of these microbes genera has the greatest possibility of crossing the placenta and reaching the fetus?   A) Bacillus B) Listeria C) Streptococcus D) Staphylococcus

27) The diseases strep throat, scarlet fever, and Rheumatic fever are caused by species within the Genera A) Bacillus B) Listeria C) Streptococcus D) Staphylococcus

20) Aerobic cyanobacteria carry out the reactions of both nitrogen fixation AND photosynthesis A) TrueB) False

32) Gram-negative nitrogen-fixing bacteria found in association with plant roots are A) alphaproteobacteria. B) betaproteobacteria. C) cyanobacteria. D) gammaproteobacteria. E) deeply branching bacteria.

38) How do the enzymes hyaluronidase and collagenase increase bacterial virulence?  A) By digesting blood clots, resulting in invasion of damaged tissues  B) By causing blood proteins to clot and providing a “hiding place” for bacteria  C) By allowing bacteria to invade deeper into tissues, making the infection more likely to cause disease D) By digesting keratin, the main protein component of skin, allowing entry of the bacteria into the body

13)   Mutualism is a relationship A)  that provides benefits for both members, sometimes to the point that one cannot live without the other. B) where one member of the relationship benefits without hurting or helping the other. C) where only one member derives benefit from the other. D) where it is difficult to prove the benefits or disadvantages one member of the relationship may provide for the other. E) where one member of the relationship may kill the other.

Determine the market price of a 25-year, 7.15%, $100,000 coupon bond when the market interest rate is 7.48%.Note: this problem may not be solved by discounting back individual payments.

42) Which of the following statements regarding the demonstration of the etiology of disease is FALSE?  A)  It must be possible to re-isolate the suspect agent from the infected experimental host.  B)  The suspect agent must be present in all cases of the disease.  C)  The suspect agent must be the only potential pathogen present in disease cases.  D)  The suspect agent must cause the disease under investigation when introduced into a susceptible host organism. E)   The suspect agent must be isolated and cultured in the laboratory.

19) Various species of ______________are important sources of antibiotics. A) ClostridiumB) StreptomycesC) CorynebacteriumD) Mycoplasma