EXERCISE 6

Question 1

Microorganisms, in natural habitats, normally exists as ________ _________

Answer 1

mixed population

Question 2

Purpose of Pure Culture (2)

Answer 2

• to study a single type of microorganism
• to characterize an individual species

Question 3

What is a pure culture

Answer 3

A population or colony of cells arising from a single cell, thus composed of only one type of microorganism.

Question 4

What is a macroscopic growth of microorganisms

Answer 4

Colony

Question 5

What is a cluster of microorganisms that is assumed to be pure

Answer 5

Colony

Question 6

In theory, how many cells will give rise to 1 colony

Answer 6

1 cell

Question 7

DILUTIONS

a measured sub-volume of original sample.

Answer 7

ALIQUOT

Question 8

DILUTIONS

material with which the sample is diluted

Answer 8

DILUENT

Question 9

DILUTIONS

Indicates how many times a sample has
been diluted

Answer 9

DILUTION FACTOR

Question 10

DILUTIONS

Reciprocal of dilution

Answer 10

DILUTION FACTOR