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









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

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