Question

1. Which of the following is NOT true of microorganisms?
They produce antibiotics.
They are used in the production of many types of food and beverages.
They decompose dead animals.
They all cause disease in humans.

2. Which of the following is NOT one of the phases of bacterial growth?
lag phase
stationary phase
doubling phase
log phase

3. Which of the following is NOT a differential stain?
Gram stain
Schaeffer-Fulton
acid-fast stain
flagellar stain

4. In a properly executed Gram stain, Gram positive organisms appear ______ while Gram negative organisms appear ______
pink, clear.
pink, purple.
purple, pink.
purple, blue.

5. Classification is necessary to _________
establish criteria for identifying organisms.
arrange related organisms into groups.
provide information about how organisms evolved.
All of the above

6. An organism that lives at the expense of another organism is a ________
host.
commensal.
parasite.
symbiont.

7. Undercooked pork is most likely to pass along ________
Schistosoma.
Tania.
Wuchereria.
Trichinella.

8. Arthropods are responsible for transmitting _____ pathogens.
viral
bacterial
protozoan
viral, bacterial, and protozoan

9. Symbiosis is an association between ________
two or more species.
one or two species.
two or more hosts.
no species but all hosts.
all species but not hosts.

10. All of the following are true of the relationship between microorganisms and diseases EXCEPT:
Sickle cell anemia patients are resistant to malaria.
Bacterial infections can lead to endocarditis.
Viral infections invariably lead to nutritional deficiency.
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?
Maturation, adsorption, penetration, release
Adsorption, penetration, release, maturation
Adsorption, penetration, synthesis, maturation
Adsorption, penetration, maturation, synthesis

12. What special group of chemical substances are used to treat diseases by microbes?
Antibiotics
Synthetic drugs
Semi-synthetic drugs
Antimicrobial agents
Chemotherapeutic agents

13. Which of the following is NOT considered a mode of action by antimicrobial agents?
Action as an antimetabolite
Inhibition of protein synthesis
Inhibition of cell wall sysnthesis
Inhibition of membrane permeability
Disruption of selective toxicity

14. All of the following characteristics are components of nonspecific host defenses EXCEPT:
Fever
Mucus
Antibodies
Interferon
Inflammation

15. What name is given to a substance that is recognized by the body as foreign and normally produces an immune response?
Antibody
Antigen
Agglutinin
Antitoxin
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?
Staphylococcus
Corynebacterium
E. coli
Demodex
All of the above

17. Defense mechanisms in the urogenital system are numerous and include ________
normal flora compete with opportunists.
sphincter muscles.
flushing action of fluids.
low pH.
All of the above

18. Food poisoning can be caused by a variety of microbes. Which of the following pairs is incorrect?
Clostridium botulinum - enterotoxin which is heat liable
Staphylococcus aureus - enterotoxin which is heat stable
Pseudomonas cocovenenans - bongkrek disease
Bacillus cereus - toxin is an emetic
Clostridium perfringens - enterotoxin and wound infection

19. The upper respiratory tract consists of the ________
pharynx.
nasal cavity.
bronchi.
All of the above
Only A and B

20. Group B Streptococcal disease include ________
early onset neonatal sepsis and meningitis.
late onset neonatal meningitis.
etiology is Streptococcus agalactiae.
All of the above
Only A and C