Edexcel GCSE Combined Science CB5 Health, disease and medicines overview quiz quiz

Bacteria, which can release toxins

Viruses, which take over host cells

Antibodies

Protists, such as the malaria pathogen

Through tiny droplets breathed out into the air

Through drinking water contaminated with the pathogen

By direct skin-to-skin contact between people

By a vector (mosquito)

It engulfs and digests pathogens

It produces antibodies specific to each antigen

It releases toxins that damage the body's cells

It carries oxygen around the body in the blood

A marker found on the outer surface of a pathogen that the body recognises

A protein made by lymphocytes that is specific to a pathogen's antigens

A harmful toxin that is released by certain types of bacteria

A type of white blood cell that engulfs and digests pathogens

Ready-made antibodies taken from another person

A live, fully active pathogen able to cause the disease

A dead or inactive form of a pathogen, or its antigens

Antibiotics that kill the bacteria once you are infected

Their skin becomes much thicker and harder to penetrate

The pathogen actively avoids anyone who has been vaccinated

Antibiotics already present in the bloodstream quickly destroy the pathogen

Memory cells make the correct antibodies quickly and in large amounts

Stomach acid

Lymphocytes that produce antibodies

Antibodies that lock onto antigens

Memory cells left after an infection

Influenza, caused by a virus

Type 2 diabetes

Cholera, caused by bacteria

Malaria, caused by a protist

Something that always causes a disease in everyone exposed to it

A type of pathogen that spreads from one person to another

Something that increases the probability of developing a disease

A treatment that provides a complete cure for a disease

Because correlations between factors are always completely wrong

Because the data collected in studies can never be trusted at all

Because diseases do not actually have any underlying causes

Because a third factor or coincidence could explain the link

Cells and tissues, then animals, then healthy volunteers, then patients

Patients first, then animals, then finally cells and tissues in the lab

Healthy volunteers first, then cells and tissues, then animals last of all

Patients only, with no earlier testing on cells, tissues or animals

To cure the patient much faster than the real active drug would manage to do on its own

To act as a dummy treatment so the real effect of the drug can be measured without bias

To gradually increase the dose of the active drug being given

To test the drug on animals before it is given to any people