Infection and Response Flashcards
what do red blood cells carry around the body
oxygen
what is a pathogen
a microbe that causes disease
can a communicable disease be passed from one person to another
yes
give 3 ways a disease can be spread
air, direct contact, water
what defence mechanism does the nose have
nose hairs and mucus
what defence mechanism does the stomach have
hydrochloric acid
what does a wbc do to kill a pathogen and what do they produce to do this
consumes it. they produce antitoxins and antibodies
what helps your body recognise cells
antigens
how does herd immunity work
when a high % of people take a vaccine to become immune from a disease. the disease then can not find a host and dies.
how is rose black spot spread and how can it be prevented
water, using fungicides
what type of microbe is malaria
protist
how is tmv spread and how can it be prevented
direct contact. good field and pest control
what is a con of painkillers
do not kill the pathogen
what can happen if antibiotics are overused
the bacteria can mutate and resist the antibiotics
how does a double blind trial work
neither the doctor nor the patient know who has which drug. this can be called the placebo effect
Where is aspirin originally extracted from
Willow tree
Where is digitalis originally extracted from
Fox glove
