B3 - infection & response

Cards (12)

How can bacteria make us feel ill?
They release toxins
How does tobacco mosaic virus affect a plant's growth?
It is usually stunted and the leaves curl down
This means they can't get sunlight
How are mosquitoes involved in the spread of malaria?
Vectors
They pass the disease from person to person without infecting themselves
What are the symptoms of gonorrhoea?
Common symptoms include pain or burning during urination,
unusual discharge or swelling
How can destroying vectors help to prevent the spread of disease?
They can reduce the spread of disease so it doesn't get passed on
What does the stomach produce that can kill pathogens?
Acid
Give 3 ways that the white blood cells can defend against pathogens?
Phagocytosis
Produce antibodies
Cytokinesis
Give 1 pro and 1 con of vaccination?
Pro: prevention of infectious diseases Con: could react to the vaccine
Why is it difficult to develop drugs that kill viruses without damaging body tissues?
Viruses attack cells
Which plant des the painkiller aspirin originate from?
Willow trees
What 2 things are drugs tested on in preclinical testing?
Animals
Human cells grown in the lab
What is a placebo?
A substance/treatment that has no effect
The doctor and patient don't know if it is the real thing or not