SCI 250 Week 7 Final Exam

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SCI 250 Week 7 Final Exam
SCI 250 Week 7 Final Exam
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Year: 2016
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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.

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

  • lag phase

  • stationary phase

  • doubling phase

  • log phase

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

  • Gram stain

  • Schaeffer-Fulton

  • acid-fast stain

  • flagellar stain

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

  • pink, clear.

  • pink, purple.

  • purple, pink.

  • purple, blue.

  1. Classification is necessary to _________

  • establish criteria for identifying organisms.

  • arrange related organisms into groups.

  • provide information about how organisms evolved.

  • All of the above

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

  • host.

  • commensal.

  • parasite.

  • symbiont.

  1. Undercooked pork is most likely to pass along ________

  • Schistosoma.

  • Tania.

  • Wuchereria.

  • Trichinella.

  1. Arthropods are responsible for transmitting _____ pathogens.

  • viral

  • bacterial

  • protozoan

  • viral, bacterial, and protozoan

  1. 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.

  1. 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

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

  • Antibiotics

  • Synthetic drugs

  • Semi-synthetic drugs

  • Antimicrobial agents

  • Chemotherapeutic agents

  1. 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

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

  • Fever

  • Mucus

  • Antibodies

  • Interferon

  • Inflammation

  1. 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

  1. 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

  1. 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

  1. 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

  1. 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

  1. 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

  1. Food contamination occurs as a result of ________

  • unsanitary practices by food handlers.

  • improper storage.

  • importation.

  • All of the above

  • Only A and B