SCI 250 Week 7 Final Exam

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SCI 250 Entire Course Link
https://uopcourses.com/category/sci-250/
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SCI 250 Week 7 Final Exam

 

Complete the final exam. The final exam will be provided
by your instructor.

 

SCI250 Week 7 Final Examination –
each question worth .5 point (20 questions x .5 point totals 10 points)

20/20
Correct

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Section:
Multiple Choice

 

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.    
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.

10. 
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

11. 
What
special group of chemical substances are used to treat diseases by microbes?

• Antibiotics


• Synthetic
  drugs


• Semi-synthetic
  drugs


• Antimicrobial
  agents


• Chemotherapeutic
  agents

12. 
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

13. 
All
of the following characteristics are components of nonspecific host defenses
EXCEPT:

• Fever


• Mucus


• Antibodies


• Interferon


• Inflammation

14. 
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

15. 
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

16. 
Defense
mechanisms in the urogenital system are numerous and include ________

• normal
  flora complete with opportunists.


• sphincter
  muscles.


• flushing
  action of fluids.


• low
  pH.


• All
  of the above

17. 
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

18. 
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

19. 
In
closed environments, such as military bases, dormitories, and day-care centers,
90% of the population can be carriers of this organism, yet only 1 per 1000
develops the meningitis. What is the etiology?

• Neisseria
  meningitidis


• Haemophilus
  influenzae


• Haemophilus
  influenzae


• Streptococcus
  pneumoniae


• Listeria
  monocytogenes

20. 
Food
contamination occurs as a result of ________

• unsanitary
  practices by food handlers.


• improper
  storage.


• importation.


• All
  of the above


• Only
  A and B