SCI 250 Week 7 Final Exam

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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