Lab 3

Question 1

Microbiota

Answer 1

the group of organisms living in a given environmental niche.

Question 2

Microbiome

Answer 2

refers to the collective genomes of organisms living in a given microbiota.

Question 3

Colony

Answer 3

A small mass of genetically identical cells.

Question 4

Lawn

Answer 4

A dense, even layer of bacteria on a plate.

Question 5

Antibiotic

Answer 5

Substances that prevent or inhibit bacterial or fungal growth.

Question 6

Zone of Inhibition

Answer 6

An area of clearing around a substance (eg. antibiotic), where sensitive organisms are unable to grow.

Question 7

Resistant

Answer 7

The ability to actively avoid the actions of an antibiotic.

Question 8

Sensitive

Answer 8

The inability to actively avoid the actions of an antibiotic.

Question 9

Aseptic Technique (sterile technique)

Answer 9

Practices designed to prevent bacteria in the environment from contaminating your work, or bacteria in your work from contaminating the environment.

Question 10

Virulent

Answer 10

Describes a pathogen against which an organism has little specific defence.