Reference no: EM131655045
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.
8. Symbiosis is an association between ________
- protozoan
- viral, bacterial, and protozoantwo 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 virus 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 synthesis
- 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. 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 meningitis.
- etiology is Streptococcus agalactiae.
- 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 meningitides
- 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
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