LAB EXAM 1

Question 1

Fomite

Answer 1

an inanimate object capable of transmission of a disease causing organism, or toxin, or chemical.

Question 2

growth medium

Answer 2

a laboratory preparation that contains nutrients that are appropriate for growing microorganisms.

Question 3

Categories of media growth

Answer 3

Chemical, function, physical state

Question 4

Defined Media

Answer 4

We know the exact formula of the chemicals that are added to make the media

Question 5

Defined Media Examples

Answer 5

Glucose Salts Medium

Question 6

Complex Media

Answer 6

There is at least one ingredient in the media whose exact chemical formula is not known eg extracts of plants or animals, peptone, blood

Question 7

Complex Media Example

Answer 7

Tryptic Soy broth

Question 8

General purpose media

Answer 8

has general nutrients for almost all organisms to grow.

Question 9

Nutrient agar

Answer 9

General purpose media - it supports growth of a wide range of non-fastidious organisms. It can grow a variety of types of bacteria and fungi, and contains many nutrients needed for the bacterial growth.

Question 10

Enriched media

Answer 10

Has additional nutrients to allow growth of certain organisms

Question 11

Enriched Media Sample

Answer 11

Blood Agar – has added sheep’s blood that promotes growth of microbes that need extra added nutrients to grow ( fastidious microbes)