B3

________ is an STD with symptoms of a thick yellow or green discharge and pain on urinating.

________- Produces hydrochloric acid which kills pathogens that make it that far from the mouth.

________ are all eukaryotes and most are single celled.

________ are blind where the patient in the study doesnt know whether theyre getting the drug or placebo.

________ and other medicines are used to treat the symptoms of disease but do not kill pathogens.

________ initially causes flu like illness.

________- Vaccinating people and animals against communicable diseases means that they cant develop the infection and then pass it on to someone else.

________ may be viruses, bacteria, protists or fungi.

________ is a viral disease showing symptoms of fever and a red skin rash.

The ________ originates from willow.

________ and bronchi- Secrete mucus to trap pathogens.

________- Acts as a barrier to pathogens.

________ was discovered by Alexander Fleming from the ________ mould.

________ live on or inside other organisms and can cause them damage.

________ are not cells.

It is caused by a bacterium and was easily treated with the ________ until many resistant strains appeared.

________- These counteract toxins produced by the invading bacteria.

If a(n) ________ enters the body the immune system tries to destroy the ________.

________ that are insects can be killed using insecticides or by destroying their habitat so that they can no longer breed.

________ can be treated by using fungicides and /or removing and destroying the affected leaves.

In the ________, poultry are vaccinated against salmonella to control the spread.

The ________ can produce spores which can be spread to other plants and animals.

________ are then produced rapidly and carried around the body to find all similar bacteria or viruses.

________ and viruses may reproduce rapidly inside the body.

________- Every invading pathogen has antigens on its surface.

The ________ is spread by inhalation of droplets from sneezes and coughs.

________ (TMV) is a widespread plant pathogen affecting many species of plants including tomatoes.

________- Hairs and mucus in the nose trap particles that could contain pathogens.

________ can not kill viral pathogens.

The spread can be controlled by treatment with antibiotics or the use of a barrier ________ such as a condom.

Some ________ are carried in the air in droplets produced when you cough or sneeze (the influenza virus that causes flu is spread this way)

Bacteria may produce poisons (toxins) that ________ tissues and make us feel ill.

________ is done in a laboratory using cells tissues and live animals.

Phagocytosis- ________ can engulf foreign cells and digest them.

The use of antibiotics has greatly reduced deaths from ________.

Being hygienic- Using ________ can prevent the spread of disease.

________- Some pathogens can be picked up by touching contaminated surfaces, including the skin (athletes foot is a fungus which makes skin itch and flake off.

________ causes recurrent episodes of fever and can be fatal.

If a drug passes the tests on animals then it is tested on ________ in a clinical trial.

The ________ is controlled by preventing the vectors, mosquitos, from breeding and by using mosquito nets to avoid being bitten.

Late stage ________, or AIDS, occurs when the bodys immune system becomes so badly damaged it can no longer deal with other infections or cancers.

________ involves introducing small quantities of dead or inactive forms of a pathogen into the body to stimulate the white blood cells to produce antibodies.

________ is a serious illness that can be fatal if complications arise.

________ live and reproduce inside cells, causing cell damage.

The ________ that cause malaria are protists.

________ is spread by sexual contact.

________ is spread by sexual contact or exchange of bodily fluids such as blood which occurs when drug users share needles.

________ is a fungal disease where purple or black spots develop on leaves, which often turn yellow and drop early.

________ are microorganisms that cause infectious disease.

Some pathogens can be picked up by touching contaminated surfaces, including the skin (athletes foot is a fungus which makes skin itch and flake off

Some pathogens can be picked up by drinking or bathing in dirty water (cholera is a bacterial infection thats spread by drinking water contaminated with the diarrhoea of other sufferers)

Pathogens can be carried in the air and can then be breathed in

Using simple hygiene measures can prevent the spread of disease

By getting rid of the organisms that spread disease, you can prevent the disease from being passed on

If you isolate someone who has a communicable disease, it prevents them from passing it on to anyone else

Vaccinating people and animals against communicable diseases means that they cant develop the infection and then pass it on to someone else

Acts as a barrier to pathogens

Hairs and mucus in the nose trap particles that could contain pathogens

Secrete mucus to trap pathogens

Produces hydrochloric acid which kills pathogens that make it that far from the mouth

White blood cells can engulf foreign cells and digest them

Every invading pathogen has antigens on its surface

These counteract toxins produced by the invading bacteria