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Science 5-6: Surroundings and Microorganisms

Total questions: 22

Worksheet time: 45mins

Name
Class
Date
1.

Tiny living things that can only be seen with the help of microscope.

a)

Plants

b)

Animal

c)

Microorganisms

2.

When the microorganisms reproduce they form ___________.

a)

Colonies

b)

Fungi

c)

More species

3.

An english scientist named Louis Pasteur was devoted by the studied of _______.

a)

Cells

b)

Fungi

c)

Germs

4.

_____________ bacteria feed off from dead organisms.

a)

Nitrifying

b)

Saprophytic

c)

Diseases

5.

___________ bacteria will make an easy access for plants or the soil to get the nitrogen they need.

a)

Saprophytic

b)

Nitrifying

c)

Germs

6.

Decomposition process is very important because it helps eliminate the remains of the living things that have died, such animals and plants.

a)

False

b)

True

7.

Which food is produced by a bacteria?

a)

Cheese

b)

Coca Cola

c)

Brocoli

8.

Process where some bacteria changes the sugars into alcohol and carbon dioxide.

a)

Sterilization

b)

Fermentation

c)

Antibacterial

9.

Low temperatures can kill most of microorganisms.

a)

True

b)

False

10.

Bacteria need water and humidity in order to grow.

a)

True

b)

False

11.

Process of humidity removal.

a)

Sterilization

b)

Fermentation

c)

Dehydration

12.

Controlling the growth and spread of these microorganisms is by not using disinfectant.

a)

False

b)

True

13.

Chemical solutions that are able to kill bacteria.

a)

Disinfectants

b)

Fermentation

c)

Sterilization

14.

Process of exposing the substances that will be disinfected to these high temperatures for about thirty minutes.

a)

Fermentation

b)

Antibacterial

c)

Pasteurization

15.

Microorganism that can cause or spread diseases

a)

Antibodies

b)

Germs

c)

Toxins

16.

Causes the death of fungi

a)

Disinfectant

b)

Insecticide

c)

Fungicide

17.

Substances in the blood that our body prepares to destroy invaders and are only produced when a virus or bacteria invade our bodies.

a)

Germs

b)

Virus

c)

Antibodies

18.

Chain of DNA or RNA that is surrounded by a coat of protein that may infect or replicate a host cell.

a)

Antibodies

b)

Virus

c)

Germs

19.

A method to attack organisms is?

a)

Vaccines

b)

Toxins

c)

Germs

20.

Microorganisms release their waste through harmful substances.

a)

Antibacterial

b)

Antitoxins

c)

Toxins

21.

Substances that are very useful when it comes to killing germs.

a)

Toxins

b)

Sterilization

c)

Antibiotics

22.

Eliminate bacteria.

a)

Bactericide

b)

Fungicide

c)

Insecticide