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microorganisme review

Total questions: 40

Worksheet time: 30mins

Name
Class
Date
1.
Yogurt and cheese  can be produced from ___________.
a)
Bacteria
b)
Virus
c)
Protozoa
d)
Algae
2.
Bacteria is known as ______________ in an ecosystem when feeding on dead organisms.
a)
decomposers
b)
herbivores
c)
pathogens
d)
infections
3.
Fungi is benefical to us because of the following reason:
a)
They are a source of oxygen
b)
They can clean up pollution
c)
They are a source of antibiotics
d)
They help to clean run off from waste
4.
What is true about bacteria?
a)
Bacteria use photosynthesis to make their own food
b)
Bacteria can only be found in dirt
c)
Bacteria is always beneficial
d)
Bacteria can be used to make certain foods
5.
Which of the following statements are true?
a)
All microorganisms are bad
b)
All microorganisms are good
c)
Some microorganisms are harmful, while some can be helpful
d)
Microorganisms are too small to do anything to anyone
6.
Why is a microscope needed to view cells?
a)
to separate cells from each other 
b)
to make cells look bigger than they are
c)
to make cells look smaller than they are
d)
to hold the cells still so they can be seen
7.
Bacteria are made up of how many cells?
a)
1
b)
2
c)
3
d)
trillions!
8.
Mold helps dead things (plants, animals)...
a)
Grow
b)
Decay
c)
Sleep
d)
Reproduce
9.

What is a cell?

a)

Is a smallest part of living thing

b)

Fiber

c)

Nutrients

d)

Wastes

10.
What type of instrument would you use to look at cells?
a)
Telescope
b)
Giroscope
c)
Microscope
d)
None of the above
11.

Microorganisms need certain condition to stay alive and grow. Which of the following condition that is not suitable for microorganism to grow.

a)

present of water

b)

present of oxygen

c)

warmth temperature

d)

cold temperature

12.

Yeast is a type of ____________ that people use to make bread.

a)

Bacteria

b)

Fungus

c)

Virus

d)

Protist

13.

Which of the following micro-organisms is called animal-liked because they have special feature to move like animal?

a)

fungi

b)

algae

c)

bacteria

d)

protozoa

14.

How do yeast reproduce?

a)

cell division

b)

budding

c)

spores

d)

fission

15.

Which micro-organism causes TBC disease?

a)

bacteria

b)

fungi

c)

virus

d)

protozoa

16.

Which microorganism helps to make yoghurt?

(a)  

17.

What gas is produced by yeast in making bread?

(a)  

18.

Mention three advantange / useful of microorganisms.

4 lines
19.

Explain how to prevent our food from decaying by microorganisms.

4 lines
20.

Beside useful, microorganisms can be also harmful. Explain two disadvantages of microorganisms.

4 lines
21.
Are microorganisms helpful or harmful?
a)
Helpful
b)
Harmful
c)
Both
d)
Neither
22.
What is Penicillin (medicine) made from?
a)
Water
b)
Sugar
c)
Mold
d)
Algae
23.
What is the difference between an autotroph and a heterotroph?
a)
Heterotrophs are producers and autotrohps are consumers
b)
Heterotrophs cannot be changed and autotrophs can change themselves
c)
Heterotrophs are consumers and autotrophs are producers
d)
Heterotrophs cannot move and autotrophs can move
24.
This microorganism has whip-like flagella, that help them move.
a)
Virus
b)
Bacteria
c)
Algae
d)
Fungi
25.

Nitrogen-fixing bacteria are important because...

a)

They are decomposers

b)

They are salt lovers

c)

They provide protection for plants from diseases

d)

They make nitrogen available to plants in form they can use

26.

All viruses contain this

a)

Nucleus and DNA or RNA

b)

DNA or RNA and protein coat

c)

Protein coat and nucleus

d)

Cell wall and DNA or RNA

27.

What is a cell?

a)

Is a smallest part of living thing

b)

Fiber

c)

Nutrients

d)

Wastes

28.

You can find bacteria all over the world.

a)

True

b)

False

29.

Which is the smallest of all microorganisms?

a)

Algae

b)

Fungi

c)

Virus

d)

Bacteria

30.
What type of instrument would you use to look at cells?
a)
Telescope
b)
Giroscope
c)
Microscope
d)
None of the above
31.

Yeast is a type of ____________ that people use to make bread.

a)

Bacteria

b)

Fungus

c)

Virus

d)

Protist

32.

Select the disease which can be treated with antibiotics.

a)

Swine Flu

b)

Influenza

c)

COVID 19

d)

Bacterial infection

33.

A disease causing organism

a)

Pathogen

b)

Poison

c)

Vaccine

d)

Prokaryote

34.

Which of these is an example of an antibiotic?

a)

Pencillin

b)

Tylenol

c)

Advil

d)

Tumms

35.

How animals get the nitrogen they need

a)

From the air they breathe

b)

From the water they drink

c)

From the food they eat

d)

From the Sun

36.

Organisms that need nitrogen to survive

a)

Only plants

b)

Only animals

c)

Only bacteria

d)

All living organisms

37.

Bacteria fix nitrogen on plant roots where plant roots provide sugar to bacteria. This is an example of

a)

Mutualism

b)

Parasitism

c)

Commensalism

d)

Competition

38.

How nitrogen is "fixed" into useable form for plants

a)

Only through action of bacteria

b)

Only through lightning

c)

Through action of bacteria & lightning

d)

Through photosynthesis

39.

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

a)

Oxygen

b)

Carbon dioxide

c)

Nitrogen

d)

Hydrogen

40.

Organism that breaks down dead plants & animals and releases nitrogen back into atmosphere

a)

Bacteria

b)

Plants

c)

Animals

d)

Producers

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