Chapter 4

Question 1

Define microbial growth

Answer 1

The increase in the number of cells which occurs by cell division

Question 2

Describe how cell division occurs

Answer 2

Bacterial cell division occurs by binary fission or sometimes by budding

Question 3

Describe binary fission

Answer 3

Cell duplicates it’s components and divides into two cells

Question 4

Describe budding

Answer 4

Cell division in yeast occurs by budding

A small and new cell develops from the surface of an existing cell and subsequently separates from the parent cell

Question 5

Name the phases of growth of bacteria

Answer 5

Lag phase
Log or exponential phase
Stationary phase
Decline or Death phase

Question 6

Describe Lag phase

Answer 6

Making a lot of ATP
The organism do not increase significantly in member, but growing metabolically active growing in size, synthesizing enzymes and incorporating various molecules from the medium

Question 7

Describe the Log or exponential phase

Answer 7

Making ATP but normal
The organism divide at their most rapid rates is a constant rate of bacterial growth during log phase.The population of organism doubles in each generation time