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SCI250 Week 7 Final exam 2017 (A+++++ Answer)
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1. Which of the following is NOT true of microorganisms?

A. They produce antibiotics.

B. They are used in the production of many types of food and beverages.

C. They decompose dead animals.

D. They all cause disease in humans.

2. Which of the following is NOT one of the phases of bacterial growth?

A. lag phase

B. stationary phase

C. doubling phase

D. log phase

3. Which of the following is NOT a differential stain?

A. Gram stain

B. Schaeffer-Fulton

C. acid-fast stain

D. flagellar stain

4. In a properly executed Gram stain, Gram positive organisms appear ______ while Gram negative organisms appear ______

A. pink, clear.

B. pink, purple.

C. purple, pink.

D. purple, blue.

5. Classification is necessary to _________

A. establish criteria for identifying organisms.

B. arrange related organisms into groups.

C. provide information about how organisms evolved.

D. All of the above

6. An organism that lives at the expense of another organism is a ________

A. host.

B. commensal.

C. parasite.

D. symbiont.

7. Undercooked pork is most likely to pass along ________

A. Schistosoma.

B. Tania.

C. Wuchereria.

D. Trichinella.

8. Arthropods are responsible for transmitting _____ pathogens.

A. viral

B. bacterial

C. protozoan

D. viral, bacterial, and protozoan

9. Symbiosis is an association between ________

A. two or more species.

B. one or two species.

C. two or more hosts.

D. no species but all hosts.

E. all species but not hosts.

10. All of the following are true of the relationship between microorganisms and diseases EXCEPT:

A. Sickle cell anemia patients are resistant to malaria.

B. Bacterial infections can lead to endocarditis.

C. Viral infections invariably lead to nutritional deficiency.

D. Infections in the brain can result in mental disease.

11. Which of the following represents the correct order of steps in a typical viruses replication cycle?

A. Maturation, adsorption, penetration, release

B. Adsorption, penetration, release, maturation

C. Adsorption, penetration, synthesis, maturation

D. Adsorption, penetration, maturation, synthesis

12. What special group of chemical substances are used to treat diseases by microbes?

A. Antibiotics

B. Synthetic drugs

C. Semi-synthetic drugs

D. Antimicrobial agents

E. Chemotherapeutic agents

13. Which of the following is NOT considered a mode of action by antimicrobial agents?

A. Action as an antimetabolite

B. Inhibition of protein synthesis

C. Inhibition of cell wall sysnthesis

D. Inhibition of membrane permeability

E. Disruption of selective toxicity

14. All of the following characteristics are components of nonspecific host defenses EXCEPT:

A. Fever

B. Mucus

C. Antibodies

D. Interferon

E. Inflammation

15. What name is given to a substance that is recognized by the body as foreign and normally produces an immune response?

A. Antibody

B. Antigen

C. Agglutinin

D. Antitoxin

E. Apoptosis

16. There are a number of different species that can live on the skin as resident microflora. Which of the following is NOT considered resident microflora of the skin?

A. Staphylococcus

B. Corynebacterium

C. E. coli

D. Demodex

E. All of the above

17. Defense mechanisms in the urogenital system are numerous and include ________

A. normal flora compete with opportunists.

B. sphincter muscles.

C. flushing action of fluids.

D. lowpH.

E. All of the above

18. Food poisoning can be caused by a variety of microbes. Which of the following pairs is incorrect?

A. Clostridium botulinum — enterotoxin which is heat liable

B. Staphylococcus aureus — enterotoxin which is heat stable

C. Pseudomonas cocovenenans — bongkrek disease

D. Bacillus cereus — toxin is an emetic

E. Clostridium perfringens — enterotoxin and wound infection

19. The upper respiratory tract consists of the ________

A. pharynx.

B. nasal cavity.

C. lungs

D. All of the above

E. Only A and B

20. Group B Streptococcal disease include ________

A. early onset neonatal sepsis and meningitis.

B. late onset neonatal meningitis.

C. etiology is Streptococcus agalactiae.

D. All of the above

E. Only A and C


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  • SCI250 Week 7 Final exam 2017 (A+++++ Answer)

    1. Which of the following is NOT true of microorganisms? A. They produce antibiotics. B. They are used in the production of many types of food and beverages. C. They decompose dead animals. D. They all c

    Submitted on: 28 Jun, 2017 03:21:16 This tutorial has not been purchased yet .