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Microbial Growth: Chemical Requirements

Total questions: 8

Worksheet time: 4mins

Name
Class
Date
1.

Which of these chemicals (that are all required) is an essential part of DNA, RNA, ATP, and membranes?

a)

Sulfur

b)

Oxygen

c)

Phosphorus

d)

Nitrogen

2.
Microorganism that requires light energy and gains nutrients via catabolism of organic compounds.
a)
photoautotrophs
b)
chemoautotrophs
c)
photoheterotrophs
d)
chemoheterotrophs
3.

The chemical growth requirements essential for bacterial growth are ...?

a)

Water,carbon,Nitrogen & sulphur

b)

Water

c)

Water,carbon,oxygen,phosphorus,Nitrogen,sulphur and other trace elements

d)

Environmental waste

4.

Bacteria that are able to get their carbon source from organic compounds are called?

a)

Autotrophs

b)

Heterotrophs

c)

Chemotrophs

d)

Saprophytes

5.

Bacteria that obtain their carbon source from carbon ioxide are called?

a)

Chemotrophs

b)

Autotrophs

c)

Heterotrophs

d)

Saprophytes

6.

The bacterium which obtain its energy from chemicals is known as a ...

a)

Phototroph

b)

Chemotroph

c)

Autotroph

d)

Heterotroph

7.

Autotrophic bacteria are those which ...

a)

Make their own food

b)

Are highly susceptible to penicillin

c)

Produce a blue-green pigment

d)

Obtain their food from the environment

8.

Which of these is NOT a chemical requirement for growth of a bacteria?

a)

Carbon

b)

Oxygen

c)

Nitrogen

d)

Sulfur