Download 1/3 rd exam for practice

Microbiology Exam 2
Practice 1/3 exam
Name ______________
Practice Exam. Take this exam. You should complete the exam within 30 minutes.
Multiple-choice 2pt apiece. Choose the most appropriate answer.
40. The emergence of new infectious diseases is probably due to all of the following except
a. The need of bacteria to cause disease
b. The ability of humans to travel by air
c. Changing environments (e.g., flood, drought, pollution)
d. A pathogen crossing the species barrier
e. The increasing human population
41. The science that deals with when diseases occur and how they are transmitted is called
a. Ecology
b. Epidemiology.
c. Communicable disease.
d. Morbidity and mortality
e. Public health
42. The most frequently used portal of entry for pathogens is the
a. Mucous membranes of the respiratory tract
b. Mucous membranes of the gastrointestinal tract.
c. Skin.
d. Parenteral route.
e. All are used equally.
43. Symptoms of protozoan and helminthic diseases are due to
a. Tissue damage due to growth of the parasite on the tissues
b. Waste products excreted by the parasite.
c. Products released from damaged tissues
d. All of the above
e. None of the above
44. The Antibiotic penicillin is most effective against
a. Fungal infections
b. All bacterial infections
c. Infections caused by Gram negative bacteria
d. Infections caused by Gram positive bacteria
e. Viral infections
45. Which of the following is not caused by a bacterium?
a. Epidemic typhus
b. Tickborne typhus
c. Malaria
d. Plague
e. Relapsing fever
46. A patient is admitted to the emergency room with nausea, vomiting, and diarrhea. The patient admits to
eating potato salad at a picknick about 5 hours earlier. The patient most likely has.
a. Shigellosis.
b. Cholera.
c. E. coli gastroenteritis
d. Salmonellosis
e. Staphylococcal food poisoning
1
Microbiology Exam 2
Practice 1/3 exam
Name ______________
2
47. Which of the following organisms is the likely organism that is found in vaginal smears that show flagellated
eukaryotes?
a. Candida b. Chlamydia
c. Gardnerella
d. Neisseria
e. Trichomonas
48. In the following figure, which line depicts the growth of an obligate anaerobe in the presence of O 2 ?
49. Which of the following is the best method to sterilize heat-liable solutions?
a. Dry heat
b. Autoclave
c. Membrane filtration
d. Pasteurization
e. None of the above
50. Which of the following does not achieve sterilization?
a. Dry heat
b. Pasteurization
c. Autoclave
d. Formaldehyde
e. Ethylene oxide
True or False: The following answer will be either True or False
51.
Females may have more urinary tract infections than males.
52. Impetigo can be caused by a number of bacteria. One that we discussed in class was Staphylococcus aureus
53. Yellow fever can be differentiated from hepatitis because yellow fever can be treated with antibiotics.
54. In a pneumonia, the alveoli of the lung can become infected, fill with fluids and interfere with oxygen uptake.
55. Mumps are more serious to children than to adults.
56. In order to be most effective, a streak plate must be used as soon as possible (within 48hrs) after the sample
is collected.
Short Answer:
1.
Antibiotic resistance in E. coli is usually caused by
2.
Growth of microorganisms in fruit preserves is usually prevented by
Essay. Please answer one of the following.
1. Differentiate between a cold and influenza. Describe the signs and symptoms of both and tell how one
can differentiate between the two. Why do no common vaccines exist for one of these?
2. Describe at least 2 diseases that are caused by one bacteria. Give the bacteria and why two different
diseases exist.