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Unit 2: Micro-organisms Review

Total questions: 33

Worksheet time: 33mins

Name
Class
Date
1.

Living organisms have a set of seven characteristics - growth, movement, reproduction, excretion, sensitivity, nutrition, and respiration.

a)

True

b)

False

2.

Non-living things have the same seven characteristics as living things.

a)

True

b)

False

3.

A chemical reaction that takes place in all living cells, releasing energy from food.

a)

movement

b)

respiration

c)

nutrition

d)

growth

4.

Making new living organisms.

a)

nutrition

b)

excretion

c)

reproduction

d)

sensitivity

5.

Getting rid of waste products from the chemical reaction taking place inside body cells.

a)

nutrition

b)

respiration

c)

sensitivity

d)

excretion

6.

Being able to sense and respond to stimuli.

a)

reproduction

b)

movement

c)

sensitivity

d)

growth

7.

What parts does an animal cell and a plant cell have in common? (check all that apply)

a)

nucleus

b)

cell wall

c)

cell membrane

d)

cytoplasm

e)

vacuole

8.

What part does an animal cell not have?

a)

chloroplast

b)

nucleus

c)

mitochondria

d)

cell membrane

9.

A micro-organism is __________.

a)

a non-living organsim so small we can only see it when we use a microscope.

b)

a living organism that we can see without a microscoope

c)

a living organism so small that we can only see it when we use a microscope.

d)

a new series on Netflix.

10.

Bacteria are found everywhere.

a)

True

b)

False

11.

Bacteria, microscopic fungi, single-cell algae and protozoa are types of microorganisms.

a)

True

b)

False

12.

One teaspoon of soil may contain one thousand million bacteria

a)

True

b)

False

13.

Microorganisms cause decay fastest when..... (choose 2)

a)

it is warm and damp

b)

it is cool and dry

c)

when they have lots of oxygen

d)

when there is no oxygen

14.

Microorganisms cause organic matter to (a)   .

15.

What is added to bread that feeds on nutrients in the flour?

a)

money

b)

yeast

c)

salt

d)

bacteria

16.

Some kinds of bacteria change milk into yoghurt or cheese. They do this by changing sugar in the milk to _________ .

a)

Piknik

b)

carbon dioxide

c)

nutrients

d)

lactic acid

17.

Diseases that are caused by microorganisms are called non-infectious diseases.

a)

True

b)

False

18.

Antibiotics can be used to cure diseases caused by _________.

a)

bacteria

b)

lactic acid

c)

allergies

d)

eating too much

19.

There are about ___________ cells in the human body.

a)

100 billion

b)

100 trillion

c)

1 trillion

d)

2

20.

There is more bacteria in your mouth than people in the world.

a)

True

b)

False

21.
Most microorganisms cannot be seen without a...
a)
microscope
b)
magnifying lens
c)
telescope
d)
x-ray machine
22.
Which is a true statement?
a)
All microorganisms are harmful.
b)
All microorganisms are beneficial.
c)
Some microorganisms are harmful while others are beneficial.
d)
Microorganisms are beneficial only to humans.
23.
The smallest microorganism on earth is known as  _____________
a)
a virus
b)
bacteria
c)
algae
d)
fungi
24.

Different kinds of _______ are adapted to carry out different functions.

a)

organs

b)

cells

c)

viruses

d)

cheeses

25.

The structure of red blood cells helps them to transport ___________.

a)

money

b)

proteins

c)

oxygen

d)

electrical signals

26.

The structure of a ______________ helps them transmit electrical signals.

a)

red blood cell

b)

root hair cell

c)

white blood cell

d)

nerve cell

27.

The structure of root hair cells helps them to absorb _________.

a)

water

b)

vitamins

c)

oxygen

d)

coffee

28.

A(n) ___________ is a group of similar cells, carrying our a particular function.

a)

organ

b)

haemoglobin

c)

tissue

d)

bacterium

29.

Tissues group together to form _________.

a)

cells

b)

red blood cells

c)

chocolate bars

d)

organs

30.

A(n) __________ is a living thing. It may contain many different organ systems, organs and tissues.

a)

organism

b)

tissue

c)

cell

d)

organ system

31.

What is haemoglobin?

a)

The substance that fights bad bacteria

b)

A new dance on TikTok

c)

The red substance that transports oxygen

d)

The red substance that transports vitamins and minerals

32.

List 2 structures in a red blood cell that are found in all animal cells.

a)

vacuole, chloroplast

b)

cell membrane, cytoplasm

c)

cell membrane, cell wall

d)

cytoplasm, vacuole

33.

Both animal cells and plant cells both contain a nucleus, cytoplasm, cell walls and mitochondria.

a)

False

b)

True