Microbiology

Question 1

Type of culture media that contains antibacterial substances that inhibit or kill all but a few types of bacteria

Answer 1

Selective medium

Question 2

Bacterial culture method that allows bacteria to be differentiated into groups on the basis of their biochemical reactions on the medium

Answer 2

Differential medium

Question 3

Type of culture media formulated to meet the requirements of most fastidious pathogens

Answer 3

Enrichment medium

Question 4

Designed to keep microbes alive while not encouraging growth and reproduction

Answer 4

Transport medium

Question 5

Why are samples to be Gram stained heat fixed before staining?

Answer 5

To prevent the sample from washing off, preserve cell morphology, kills bacteria, and renders them permeable to stain

Question 6

What reagent should be used to prepare a solid tissue sample for fungal testing?

Answer 6

Potassium hydroxide solution

Question 7

The catalase test is used to help identify gram-_____ _____ and small gram-_____ _____

Answer 7

positive cocci; positive bacillli

Question 8

The reagent used for the catalase test is ______

Answer 8

3% hydrogen peroxide

Question 9

Fungal organisms consist largely of webs of slender tubes called _____

Answer 9

Hyphae

Question 10

Partial hemolysis that creates a narrow band of greenish or slimy discoloration around the bacterial colony is referred to as….

Answer 10

Alpha

Question 11

The _____ test is used to aid bacterial classification when gram-variable results are obtained

Answer 11

Potassium hydroxide test

Question 12

Haiirs infected with some species of ______ may fluoresce a clear apple-green under the Woods lamp in a darkened room

Answer 12

Microsporum

Question 13

A fungus that causes infections of the skin, hair, and nails

Answer 13

Dermatophyte