Lab 25

Question 1

infecting an animal with pseudomonas aeruginosa protects them against what?

Answer 1

bacillus anthracis

Question 2

(against life), inhibition of a microbes

Answer 2

antibiosis

Question 3

a substance produced by a microorganism that inhibits other microorganisms

Answer 3

antibiotic

Question 4

produce nearly 70% of all antibiotis

Answer 4

streptomyces

Question 5

antimicrobial chemicals used internally, whether natural or synthetic

Answer 5

antimicrobial drugs

Question 6

disease-causing organism

Answer 6

pathogen

Question 7

petri plate with agar growth medium is inoculated uniformly. paper disks with various antimicrobial agents are placed on the surface of the agar. the agent diffuses from the paper disk, from an area of high concentration to lower. measured by zones of inhibition

Answer 7

disk-diffusion method

Question 8

standardized method for agar diffusion methods

Answer 8

Kirby-Bauer test

Question 9

agar used in Kirby-Bauer test that allows the antimicrobial agent to diffuse freely

Answer 9

Mueller-Hinton agar

Question 10

The ______ of an antibiotic is determined by testing for bacterial growth in dilutions of the antibiotic in nutrient broth.

Answer 10

minimum inhibitory concentration (MIC)