The smart way to improve grades

Comprehensive & curriculum aligned

Affordable pricing from £10/month

Harmful Microorganisms

In this worksheet, students will explore the question "can microorganisms be harmful?" and will look at the causes of infection.

Key stage:  KS 3

Curriculum topic:  Extend Your Learning

Curriculum subtopic:  Interesting Topics from the Old Curriculum

Difficulty level:  

Start your £1 trial today
down

Here's a preview of the tutorial worksheet your child will complete. Sign up to EdPlace and access 1000s of worksheets that are marked automatically. With an account you can track progress and measure results.

QUESTION 1 of 10

This worksheet asks...

 

 

It looks at the causes of infections, how these pathogens enter our body and what steps we can take to avoid infection. 

Look at the lady in this picture:

 

 

She has a cold. Colds are normally caused by what micro-organism? 

fungi

virus

bacteria

When someone has a cold, it is an infection. The person is often described as infectious, but what does that mean?

They can pass the infection onto others.

They will never get better.

They are dirty.

What precautions should the person take to stop them spreading the cold virus?

sneeze into their hand

sneeze into a tissue

wash their hands with soap

wipe their hands on a towel

avoid very busy places

go to very busy places

What extra precaution do some people around the world take (for example - in Japan), to prevent the spread of a cold virus?

not allowed out of their homes whilst infectious

not allowed to visit people whilst infectious

wear face masks whilst infectious

It is not just viruses that can make you ill. Bacteria and fungi can also cause disease. 

Any organism that causes a disease is called a ____________.

pathogen

microbe

parasite

Which of the following illnesses are caused by a virus?

flu

tuberculosis

whooping cough

chicken pox

typhoid

AIDS

Which of the following illnesses are caused by bacteria?

food poisoning

typhoid

thrush

ring worm

athlete's foot

cholera

Which of the following illnesses are caused by a fungi?

athlete's foot

ebola

measles

ringworm

thrush

chicken pox

A small number of illnesses are not caused by viruses, bacteria or fungi, they are caused by a small single celled organism called a protozoan. One example of an illness caused by a protozoan is malaria. 

 

How is malaria transmitted from person to person?

through the air

in infected food

by insects called mosquitoes

Select all the ways to avoid or reduce the risk of infection.

cook food thoroughly

wash hands with soap

avoid drinking or bathing in dirty water

use insect repellent

wash cuts & cover them whilst they heal

use a condom during sex

  • Question 1

Look at the lady in this picture:

 

 

She has a cold. Colds are normally caused by what micro-organism? 

CORRECT ANSWER
virus
EDDIE SAYS
Colds are caused by a virus hence we cannot take antibiotics to cure it. We simply have to drink plenty of water, take paracetamol to keep our temperature down and allow our bodies to defeat the virus!
  • Question 2

When someone has a cold, it is an infection. The person is often described as infectious, but what does that mean?

CORRECT ANSWER
They can pass the infection onto others.
EDDIE SAYS
When a person infected with a cold sneezes, they spray lots of tiny water droplets into the air. These droplets contain the virus. If you breathe in these droplets, you could also become infected.
  • Question 3

What precautions should the person take to stop them spreading the cold virus?

CORRECT ANSWER
sneeze into a tissue
wash their hands with soap
avoid very busy places
EDDIE SAYS
We should always follow simple precautions to reduce the spread of all pathogens, not just the cold virus.
  • Question 4

What extra precaution do some people around the world take (for example - in Japan), to prevent the spread of a cold virus?

CORRECT ANSWER
wear face masks whilst infectious
EDDIE SAYS
Maybe this is an extra precaution we should adopt in this country. Would you be willing to wear a face mask to school if you had a cold?
  • Question 5

It is not just viruses that can make you ill. Bacteria and fungi can also cause disease. 

Any organism that causes a disease is called a ____________.

CORRECT ANSWER
pathogen
EDDIE SAYS
A pathogen is defined as a "virus, bacterium or other microorganism that can cause disease".

A microbe is simply a term for a microorganism, and a parasite is an organism which lives on or in another organism, taking nutrients from it's 'host'.
  • Question 6

Which of the following illnesses are caused by a virus?

CORRECT ANSWER
flu
chicken pox
AIDS
EDDIE SAYS
Influenza, commonly known as "the flu", is an infectious disease of birds and mammals caused by RNA viruses of the family Orthomyxoviridae, the influenza viruses. Chickenpox (medically known as varicella) is caused by a virus called the varicella-zoster virus. HIV stands for human immunodeficiency virus. The virus attacks the immune system, and weakens your ability to fight infections and disease. AIDS is the final stage of HIV infection, when your body can no longer fight life-threatening infections.
  • Question 7

Which of the following illnesses are caused by bacteria?

CORRECT ANSWER
food poisoning
typhoid
cholera
EDDIE SAYS
Food that causes illness has usually been contaminated by bacteria, such as Salmonella or E. coli. Typhoid is caused by a bacterium called Salmonella typhi, which is related to, but not the same as, the bacteria that cause salmonella food poisoning. Cholera is caused by drinking water contaminated with Vibrio cholerae bacteria, or by eating food that has been in contact with contaminated water.
  • Question 8

Which of the following illnesses are caused by a fungi?

CORRECT ANSWER
athlete's foot
ringworm
thrush
EDDIE SAYS
A group of fungi called dermatophytes is responsible for athlete’s foot. Ringworm is also caused by fungi called dermatophytes, not by a parasitic worm as the name suggests! Thrush is a yeast infection, usually caused by a yeast-like fungus called Candida albicans.
  • Question 9

A small number of illnesses are not caused by viruses, bacteria or fungi, they are caused by a small single celled organism called a protozoan. One example of an illness caused by a protozoan is malaria. 

 

How is malaria transmitted from person to person?

CORRECT ANSWER
by insects called mosquitoes
EDDIE SAYS
Mosquitoes carry the protoctist Plasmodium, which is passed onto people when they receive a mosquito bite.
  • Question 10

Select all the ways to avoid or reduce the risk of infection.

CORRECT ANSWER
cook food thoroughly
wash hands with soap
avoid drinking or bathing in dirty water
use insect repellent
wash cuts & cover them whilst they heal
use a condom during sex
EDDIE SAYS
Doing all these things will reduce our risk of infection. Remember, different micro-organisms can enter our body in different ways!
Previous Next

Easy As 1-2-3

Have fun learning at home on our desktop website or on-the go with our app

Start your £1 trial today.

Terms apply