Microbial metabolism - environmental control test questions

1

What is the scientific term used to describe the growth of bacteria under laboratory conditions?

2

Micro-organisms are what?

3

Which condition must be controlled in order to stop contamination of a growth medium?

4

Under optimal conditions, the bacteria E. Coli multiplies every 20 minutes. How many bacterial cells will there be if one E. Coli cell was cultured under optimal conditions for 1 hour and 40 minutes?

5

Which description is the most appropriate to the lag phase during a microorganism growth pattern?

6

The nutrients in the growth medium are depleted and the number of microorganisms stays the same so there is no overall growth. Which phase does this describe?

7

Why does the growth of microorganisms result in a death phase?

8

Which stage shows the exponential growth phase?

Graph charting growth of microbes.

9

Primary and secondary metabolites are associated with which phases of microorganism growth?

10

Secondary metabolites can give microorganisms what kind of advantage?