5.5.1: Matching

Matching Questions

1. Match the classification on the left with the appropriate description of the conditions it prefers by placing the letter next to the correct term.

   Question 1 Terms

   Answer	Terms
   _____	1. Psychrophile
   _____	2. Psychrotroph
   _____	3. Mesophile
   _____	4. Thermophile
   _____	5. Hyperthermophile
   _____	6. Acidophile
   _____	7. Neutrophile
   _____	8. Alkaliphile

   Question 1 Descriptions

   Letter	Description
   a.	optimal growth temperatures greater than 80°C
   b.	optimal pH range less than pH 5.5; the Lactobacillus species of the normal vaginal flora are an example
   c.	minimum growth temperature of 0°C or lower and a maximum around 15°C; not capable of growth above 20°C
   d.	prefers alkaline conditions of pH 8 or greater; Vibrio cholerae is a clinically significant example
   e.	optimal growth temperatures between approximately 20°C and 45°C; pathogenic microorganisms generally fall in this group
   f.	tolerates growth temperatures from around 0°C - 5°C up to around 35°C
   g.	prefers a neutral pH range near pH 7; most microorganisms belong to this classification
   h.	tolerates temperatures up to 80°C

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   Answers:
   1) c
   2) f
   3) e
   4) h
   5) a
   6) b
   7) g
   8) d
2. Match the type of antimicrobial agent on the left with the appropriate description of what it does by placing the letter next to the correct term.

   Question 2 Terms

   Answer	Terms
   _____	1. Microbicidal agent
   _____	2. Microbiostatic agent
   _____	3. Bactericidal agent
   _____	4. Bacteriostatic agent
   _____	5. Virucidal agent
   _____	6. Sporicidal agent
   _____	7. Antiseptic
   _____	8. Disinfectant
   _____	9. Sanitizer

   Question 2 Descriptions

   Letter	Description
   a.	reduces microbial numbers on inanimate objects such as lab benches and kitchen counters
   b.	acts only to inhibit the growth of microorganisms
   c.	specifically targets and destroys viruses
   d.	acts to kill microbes
   e.	reduces microbial numbers on living tissues
   f.	works to inhibit the growth of bacteria
   g.	destroys endospores, and is therefore also known as a sterilant
   h.	used primarily in the food industry to reduce microbes to a safe level
   i.	specifically works to kill bacteria

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   Answers:
   1) d
   2) b
   3) i
   4) f
   5) c
   6) g
   7) e
   8) a
   9) h
3. Match the Kirby-Bauer susceptibility result on the left with the appropriate description of what it means for treating a patient by placing the letter next to the correct result.

   Question 3 Terms

   Answer	Terms
   _____	1. Susceptible (S)
   _____	2. Intermediate (I)
   _____	3. Resistant (R)

   Question 3 Descriptions

   Letter	Description
   a.	higher than normal concentrations would be needed to inhibit the bacteria, so effectiveness in the patient is uncertain
   b.	the bacteria are resistant in vitro, so there is a likelihood the drug would be ineffective in treating the infection
   c.	the concentration of the drug usually used is capable of inhibiting the bacteria, and there is a good chance it may work to treat the infection

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   Answers:
   1) c
   2) a
   3) b