4

Question 1

is a population of cells arising from a single cell or spore or from a group of attached cells

Answer 1

colony

Question 2

The most common method of obtaining a pure culture from a mixed sample from the environment, from human, or from animal samples is

Answer 2

streak plate method.

Question 3

To quantify the microbial population in water, food, milk or environmental samples

Answer 3

Standard Plate Count (SPC)

Question 4

is used to create
decreasing concentrations of the original sample that are then plated so that a particular dilution point
will have countable number of bacteria

Answer 4

Serial dilution

Question 5

is used in direct microscopic
counts

Answer 5

Petroff-Hausser cell
counter

Question 6

This method is based on turbidity and
indirectly measures all bacteria (cell biomass), dead and alive.

Answer 6

Spectrophotometric (Turbidimetric) Analysis