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Microorganism - Friend and Foe

Total questions: 20

Worksheet time: 10mins

Name
Class
Date
1.

Microorganisms are

a)

Unicellular

b)

Multicellular

c)

Both of these

d)

None of these

2.

_________ convert atmospheric nitrogen into plant usable form

a)

viruses

b)

protozoa

c)

bacteria

d)

fungi

3.
A preparation of weakened or killed pathogens.
a)
Bacteria
b)
Antibiotic Resistance
c)
Vaccine
d)
Capsid
4.

You can find bacteria all over the world.

a)

True

b)

False

5.

A disease causing organism

a)

Pathogen

b)

Poison

c)

Vaccine

d)

Prokaryote

6.

Gas that makes up almost 78% of Earth's atmosphere

a)

Oxygen

b)

Carbon dioxide

c)

Nitrogen

d)

Hydrogen

7.

The gas released during the preparation of bread is

a)

oxygen

b)

carbon dioxide

c)

nitrogen

d)

sulphur dioxide

8.

The process of conversion of sugar into alcohol

a)

Dehydration

b)

Evaporation

c)

Fermentation

d)

Sweetening

9.

Bacteria present in the root nodules of pea.

a)

Rhizobium

b)

Streptococcin

c)

Salmonella

d)

Staphylococcus

10.

Amoeba belongs to

a)

Algae

b)

Fungi

c)

Protozoa

d)

Virus

11.

Scientist who discovered fermentation is

a)

Alexander Fleming

b)

Louis Pasteur

c)

John Mendal

d)

Edward Jenner

12.

Which of the following diseases is caused by a bacteria?

a)

Chicken pox

b)

Tuberculosis

c)

Dengue

d)

Polio

13.

In order to take precautionary steps to control dengue, we must take measures to stop the breeding of:

a)

Aedes mosquito

b)

Fire ants

c)

Anopheles mosquito

d)

Fleas

14.

Partial sterilization of a product such as milk at a high temperature is known as:

a)

Filtration

b)

Refrigeration

c)

Pickling

d)

Pasteurization

15.

The bacterium present in curd is:

a)

Salmonella typhi

b)

Lactobacillus

c)

Penicillin

d)

Vibrio cholera

16.

______ is used for the production of alcohol and wine.

a)

Yeast

b)

Virus

c)

Algae

d)

Amoeba

17.

Which organisms are microscopic and reproduce on host cell?

a)

Algae

b)

Protozoa

c)

Viruses

d)

Bacteria

18.

A plant disease called citrus canker is caused by a _________ .

a)

Virus

b)

Bacteria

c)

Fungi

d)

Protozoa

19.

The process by which amount of nitrogen remains the same in the atmosphere is known as

a)

Fermentation

b)

Carbon cycle

c)

Nitrogen cycle

d)

Photosynthesis

20.

This is ___________________

a)

Penicillium

b)

Bacteria

c)

Paramecium

d)

Bread mould