Reference no: EM13797690
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. In a properly executed Gram stain, Gram positive organisms appear ______ while Gram negative organisms appear ______
pink, clear.
pink, purple.
purple, pink.
purple, blue.
4. Classification is necessary to _________
establish criteria for identifying organisms.
arrange related organisms into groups.
provide information about how organisms evolved.
All of the above
5. An organism that lives at the expense of another organism is a ________
host.
commensal.
parasite.
symbiont.
6. Undercooked pork is most likely to pass along ________
Schistosoma.
Tania.
Wuchereria.
Trichinella.
7. Arthropods are responsible for transmitting _____ pathogens.
viral
bacterial
protozoan
viral, bacterial, and protozoan
8. 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.
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
Deodex
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. The upper respiratory tract consists of the ________
pharynx.
nasal cavity.
bronchi.
All of the above
19. Group B Streptococcal disease include ________
early onset neonatal sepsis and meningitis.
late onset neonatal menegitis.
etiology is Streptococcus agakactiae.
All of the above
20. 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
21. Food contamination occurs as a result of ________
unsanitary practices by food handlers.
improper storage.
importation.
All of the above
Top of Form
22. What is a possible symptom of Lyme disease?
A bull's-eye rash at the point of the insect bite
Flulike symptoms
Arthritis
Symptoms resembling Alzheimer's disease
All of the above
23. Clinical symptoms of tuberculosis primarily result from ________
host inflammatory response.
mycotoxins.
endotoxin.
mucus production
exotoxin
24. Widespread lesions with intense itching; other mites cause house dust allergy when their feces are inhaled by allergic individuals
Rat bite fever
Pasteurella multocida infection
Tick paralysis
Scabies
Pediculosis
Myiasis
25. Which of the following stains is used to classify microorganisms based on their cell wall content?
Capsular stain
Gram stain
Spore stain
Negative stain
Methylene blue