6. Why is it important not to use antibiotics too frequently?

To allow the white blood cells of the body to kill more often instead of letting the antibiotics do all the work.
So the antibiotics don't run out.
To prevent more resistant strains of bacteria appearing.
To ensure the illness is fully spread before starting to kill the bacteria off.

7. What is agar jelly?

A culture medium. It contains carbohydrate as an energy source along with various minerals and sometimes other chemicals.
A type of jelly that is found in cake recipes.
A culture medium. It contains proteins as an energy source along with various minerals and sometimes other chemicals.
A culture medium. It is a solid, with a slight jelly-like structure, that contains minerals and sometimes other chemicals.

When a new type of disease is found on a patient in more than one country.
When more cases of an infectious disease are recorded that expected in one country.
When more cases of an infectious disease are recorded than expected in more than one country.
When a new type of disease is found on a patient in one country.

Medicines that can work inside your body to kill the bacteria that cause diseases.
Bacteria that can work inside the body to relieve the pain that is caused by infectious disease cells.
Bacteria that can work inside your body to kill the infectious disease cells.
Medicines that can work inside your body to relieve the pain that is caused by bacteria.

Flemming experimented with bacteria very often. One day, he found a bacteria that killed other on the tes he was experimenting on. He called it penicillin.
Flemming grew bacteria on agar plates. He was a careless person and didn't conduct experiments properly, and one day discovered a mould being formed that killed other bacteria. He called it penicillin.
Semmelweiss experimented with bacteria very often. One day, he found a bacteria that killed other on the tes he was experimenting on. He called it penicillin.
Semmelweis grew bacteria on agar plates. He was a careless person and didn't conduct experiments properly, and one day discovered a mould being formed that killed other bacteria. He called it penicillin.

Ingesting microorganisms, producing antibodies, and producing antitoxins.
Act as protective barriers around your body cells, every time an infection touches them, the infection is killed.
They come out of your skin pores and prevent any infection from entering, by sacrificing their lives.

Single-celled living organisms that are much smaller than animal cells but larger than plant cells.
Single-celled living organisms that are much smaller than animal and plant cells.
Multiple-celled living organisms that are much bigger than both plant and animal cells.
Multiple-celled living organisms that are much smaller than animal and plant cells.
Single-celled living organisms that are much larger than animal cells but smaller than a plant cell.

To kill off unwanted or harmful bacteria that will affect the results of the experiment.
To ensure that the bacteria made will be absolutely clean and healthy.
To make sure lots and lots of bacteria are produced rapidly.
To provide the culture lots of nutrients and energy needed to start a bacterial colony.

A single virus produces enough toxins and takes over all the white blood cells in your blood streams.
They take over the cells of your body as they reproduce, damaging and destroying your cells.
They reproduce, producing toxins which affect your organs.
They reproduce, making toxins and spreading them in your blood.