BIOLOGY 204 ANTELOPE VALLEY COLLEGE
GENERAL MICROBIOLOGY SPRING 2007
INSTRUCTOR: Dr A. Hemsley
THEORY TEST 5 100 POINTS
STUDENT NAME: ______
STUDENT I.D. NUMBER: ______
• Perusal time = 10 minutes
• Test time = 105 minutes
• ANSWER ALL QUESTIONS
• Read ALL questions carefully during perusal time, you may write if you wish.
• Use the back of each sheet if you do not have enough writing space, but please label each answer.
• Question subheadings are NOT of equal points value.
• Points allocated for each subheading are shown at the end of the question.
GOOD LUCK!
QUESTION 1 (Total =10 points)
Match entries in the left column with answers from the lettered choices in the right column. Write your letter choice to the far left of each question in the spaces provided. Use each answer only ONCE. (1 Point per correct pair)
_____ 1. Disinfection process that is used in drinking water purification a. Methane
_____ 2. Using microbes to produce fuels from solid waste b. Ozonation
_____ 3. Method for secondary sewage processing c. Carbon
dioxide
_____ 4. Additional sewage treatment in environmentally sensitive zones d. Rennin
_____ 5. Genus of bacteria used in sludge treatment e. Bioconversion
_____ 6. Genus of bacteria commonly used in secondary sewage treatment f. Monosaccharides
_____ 7. Gaseous energy source derived from sludge treatment g. Zooglea
_____8. Gas produced in sewage liquid treatment h. Tertiary
_____ 9. Enzyme used in the first stage of cheese manufacture i. Methanobacter
____ 10. Carbon source used by yeast in brewing j. Activated sludge method
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QUESTION 2 (Total =10 points)
Provide definitions or explanations for the following terms:
CURD
BIOLOGICAL OXYGEN DEMAND
TERTIARY SEWAGE TREATMENT
BUBO
PHARYNGITIS
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QUESTION 3 (Total =20 points)
A. Briefly outline what is meant by immobilized enzymes, and give an example of an application within this technology (5)
B. Provide two specific uses for amino acids produced by fermentation technology. Be sure to name the amino acids you are describing along with its use. (4)
C. What is meant by the term "overproducer", when used to describe commercially valuable microbes? How are such microbes usually obtained? (6)
D. A patient with a heart pacemaker received antibiotic therapy for streptococcal bacteremia. One month later, he was treated for recurrence of the bacteremia. When he returned 6 weeks later, again with bacteremia, the physician recommended replacing the pacemaker. This cured the condition. Explain what you think was happening, and why the new pacemaker was recommended. (5)
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QUESTION 4 (Total =20 points)
A. DISEASE: TYPHOID FEVER (6)
(i) Name the organism that causes this disease
(ii) How is the disease contracted?
(iii) What are the symptoms?
(iv) Explain why this disease is still endemic in developing nations
B. DISEASE: BOTULISM (6)
(i) Name the organism that causes this disease
(ii) How is the disease contracted?
(iii) What are the symptoms, and what causes these symptoms?
(iv) What is the treatment for BOTULISM?
C. DISEASE: BUBONIC PLAGUE (6)
(i) Name the organism that causes this disease
(ii) Why is this disease so contagious?
(iii) Which form of the plague has the highest mortality rate?
(iv) What is the recommended treatment?
D. There is advantage in treatment when an early diagnosis of rabies is made. What is it? Why does this unusual phenomenon occur? (2)
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QUESTION 5 (Total =20 points)
Fill in the blanks in the following sentences. (1 point per correct sentence)
1. In the beer making industry, ground, roasted grain sprouts are known as ______.
2. Wines often contain ______used to control unwanted microbe populations.
3. ______is a food preservation method where foods produced may actually be sterile.
4. ______is used to extend the shelf life of beer, wines and cheeses.
5. Bacteria that survive and grow in cans exposed to temperature abuse commonly cause
______food spoilage.
6. Two examples of foods that often contain live bacteria capable of causing illness are
______and ______.
7. Tetanus is caused by toxin released from the species ______.
8. ______(name Genus) is a soil/water bacterium often associated with ear and respiratory infections.
9. ______(species) causes food poisoning often associated with seafood.
10. ______is caused by invasive forms of Escherichia coli.
11. A bacterial genus responsible for Trench Mouth is ______.
12. A very common cause of food poisoning is intoxication by ______enterotoxin (Give genus and species).
13. The most common Streptococcus subgroup causing human infections is the ______.
14. Virulent bacteria in the Helicobacter pylori species cause the disease ______. ______.
15. A bacteria that commonly causes food poisoning in casseroles is ______.
16. A bacteria responsible for meningitis is ______(species).
17. ______is the name of a fungus that may cause overwhelming systemic
infections in immunocompromised hosts.
18. ______is the only disease that human health programs have managed to eradicate.
19. A subcutaneous ______is caused by Sporothrix schenkii.
20. ______is a bacterial species that causes neonatal ophthalmia ( species).
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QUESTION 6 (Total =20 points)
A. Explain why it is true to state that more lives have been saved by plumbers than by doctors (3)
B. Sandra attended her church social, an outdoor potluck picnic on July 4th. She ate a large plate of food, including a hamburger, several turkey hot dogs in bread rolls with mayonnaise and ketchup on them and a dessert chocolate cream pie. All the food was prepared by church attendees before the picnic, placed unrefrigerated on tables in the morning and then uncovered and served at the noon hour.
Sandra went home and that night she experienced mild fever, nausea, abdominal pain and diarrhea. Fortunately she felt better in a few days, but talking to other attendees of the picnic, she discovered that many people became ill after the event.
Name two suspicious foods and a microbe likely to cause food poisoning associated with each of the foods you have named. (4)
How can illnesses like this be avoided? (3)
C. List the five most significant pieces of information you have gained from this Microbiology class and how they will help you in your career or at home. Please do not use the answers to questions from this test! (10)
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