8C Quick Quiz

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1 Two different sorts of microbes are:

A plants and fungi.

B crustaceans and viruses.

C viruses and bacteria.

D viruses and pollen grains.


2 Which of these lists the organisms in the correct size order, smallest first?

A viruses, bacteria, fungi, rose bushes, elephants

B elephants, rose bushes, fungi, bacteria, viruses

C bacteria, viruses, fungi, rose bushes, elephants

D fungi, bacteria, viruses, rose bushes, elephants


3 Why do some people think that viruses are not living things?

A They cannot carry out all seven of the life processes.

B They can give people diseases.

C They do not have lungs and so cannot breathe.

D They are too small to see.


4 Look at the two pictures. What do they show?


A X is a fungus and Y is a bacterium.

B X is a pollen grain and Y is a virus.

C X is a crustacean and Y is a plant.

D X is a virus and Y is a bacterium.



1 Which microbe is used to make bread rise?

A bacteria B yeast

C plants D sodium bicarbonate


2 What gas is needed for aerobic respiration?

A carbon dioxide

B water

C oxygen

D carbon monoxide


3 Which of these shows the correct word equation for fermentation?

A oxygen + glucose carbon dioxide +

water (+ energy)

B carbon dioxide + water oxygen +


C glucose carbon dioxide + ethanol

(+ energy)

D xenon + krypton argon + neon +



4 The graph shows the growth of a population of yeast.


         At point P the population stops getting bigger. One reason for this might be that:

A the yeast cells can only grow to a certain size.

B the food for the yeast has started to run out.

C is has got dark and there is not enough light for them to grow.

D the carbon dioxide for the yeast has started to run out.



1 When a microbe gives you a disease you are said to be:

A indebted to the microbe.

B ingested by the microbe.

C injected by the microbe.

D infected by the microbe.


2 Colds, flu, chickenpox and AIDS are all caused by:

A viruses. B fungi.

C polluted air. D animals.


3 Dimitri has a cold. He may have caught this by:

A standing in a cold place for too long.

B not eating enough fruits and vegetables.

C breathing in air containing a microbe.

D staying up too late and getting very tired.


4 A theory is:

A the results of an experiment.

B the observations made during an experiment.

C a scientific idea that can be tested.

D a scientific idea that no one believes.



1 Bacon goes off least quickly if it is kept in a:

A fridge. B fruit bowl.

C bread box. D freezer.


2 One part of your body that tries to keep microbes out is your:

A hair. B nails. C arm. D skin.


3 Look at the diagram.

The organ shown in the diagram can kill microbes because:

A it is very hot.

B it squashes them.

C there is no air in it.

D it contains a strong acid.


4 Antibodies are made by:

A red blood cells. B white blood cells.

C bacteria. D platelets.



1 An antibiotic is a medicine that:

A kills bacteria and viruses.

B kills only viruses.

C kills only bacteria.

D is dangerous and so is no longer used.


2 Vaccines make your body:

A produce antibodies against a disease.

B stop working to allow an operation to be done.

C cool down when you get a temperature.

D produce extra cells to mend broken bones.


3 If a person is immune to a disease, they:

A keep on getting it over and over again.

B can never get the disease.

C need to be taken special care of because the disease might kill them.

D can only get the disease two or three times during their lives.


4 A microbe that is not affected by an antibiotic is said to be:

A susceptible to the antibiotic.

B resistant to the antibiotic.

C killed by the antibiotic.

D denatured by the antibiotic.