fighting disease Flashcards
name 2 types of pathogen and explain how each one makes you feel ill
bacteria-produces toxins
viruses- destroy cells
give three ways in which white blood cells help to defend the body against disease
1- they engulf and digest foreign cells/pathogens
2-by producing antitoxins
3- by producing antibodies to lock on to and kill invading cells
what does it mean if a person is immune to a certain pathogen
that if they were infected with that pathogen again the white blood cells will rapidly produce the antibodies to kill it
‘painkillers can be used to tackle the cause of an infection’ true or false
false
what is an antibiotic? give example
a drug used to prevent or kill the growth of bacteria e.g. penicillin
Why is it important to be treated with the right antibiotic for a particular infection
different antibiotics treat different bacteria so its right to treat the right one.
explain why it can be difficult to develop drugs that kill viruses?
viruses reproduce using your body cells so its diificult to develop drugs to kill the virus and not the body cells
name a strain of bacteria that developed antibiotic resistance
mrsa
by what process have resistance strains of bacteria increased
natural selection
why is it Important to not over use antibiotics
to stop the spread of antibiotic resistance
chloe is suffering from a virus explain why the doctor will not prescribe antibiotics
because antibiotics don’t destroy viruses
What did the doctor semmelweis discover in relation to infectious disease
that if doctors washed their hands in an antiseptic that it would cut the death rate of women with puerperal fever
how have antibiotics affected the death rates from infectious disease
they’ve decrease
explain why drug companies are trying to develop new antibiotics
that their effective against the antibiotic resistance strains of bacteria
