AQA GCSE Biology 4.3 Infection and response overview quiz quiz

Measles

Malaria

Salmonella food poisoning

Rose black spot

By living inside our cells and destroying them

By blocking the blood vessels

By reproducing rapidly and producing toxins

By making antibodies

Malaria

Gonorrhoea

Salmonella

Measles

An organism that carries a pathogen from one host to another without becoming ill

A type of antibody made by white blood cells to mark a particular pathogen

A drug that kills bacteria but has no effect at all on a virus living inside the cells

A white blood cell that engulfs and digests pathogens during an infection

Producing antibodies against a specific pathogen

Stomach acid killing pathogens

Phagocytosis carried out by white blood cells

Producing antitoxins to neutralise bacterial toxins

To neutralise the toxins that are released by bacteria in the body

To engulf and digest pathogens by surrounding them completely

To bind to specific antigens and mark pathogens for destruction

To make new red blood cells to carry oxygen around the body

It kills all of the bacteria already living in the body before they can spread

It provides ready-made antibodies taken directly from the blood of another person

It treats the symptoms of the disease, such as a high fever or a cough, until the patient recovers

It introduces dead or inactive pathogen so white blood cells make antibodies and memory cells

Antibiotics only kill bacteria, and viruses live inside cells

Viruses are far too large for any antibiotic to be able to kill them

Viruses are not harmful and so do not need to be treated with a drug

Antibiotics actually make viruses stronger and harder to get rid of

A higher dose given to some of the patients than to the others in the trial

A placebo, with neither patients nor doctors knowing who has the real drug

Testing the drug only on animals before any humans are allowed to take it

Giving the real drug to every single patient who takes part in the trial

By extracting them directly from the leaves and stems of certain plants

By heating up bacteria until they release the antibodies they have made

By fusing a lymphocyte with a fast-dividing tumour cell to form a hybridoma

By vaccinating a human patient and collecting the antibodies from their blood

They make the cancer cells divide faster so they can be spotted more easily

They kill every cell in the body, both the healthy ones and the cancerous ones

They replace the white blood cells that the patient has lost during treatment

They are specific and can deliver a drug directly to the cancer cells

Alexander Fleming

Charles Darwin, who studied evolution

Gregor Mendel, who studied genetics

Louis Pasteur, who studied germ theory