3 - infestion and response Flashcards
1
Q
protists
A
- eukaryotes
- single cells
2
Q
how can pathogens be spread
A
water
air
dircet contact
3
Q
3 viral diseases
A
measles
HIV
TMV
4
Q
mealses
A
- spread through sneezing - droplets
- skin rash /fever
- most ppl vaccinated tho
5
Q
HIV
A
- spread through sex or exchanging body fluids - needles
- flu-like symptoms
- antiretroviral drugs
6
Q
TMV
A
tobacco mosaic virus
- affects plants/tomatoes
- causes discolouration on leaves - cant photosynthesis - stunted growth
7
Q
about a fungal disease - what, cause, spread, solution
A
rose black spot
- purple/black spots on a rose leaf - turn yellow and drop off
- less photosynthesis - stunted growth
- spread through water or wind
- treated with fungicides or stripping infected leaves
8
Q
disease caused by protist
A
- malaria
- mosquitoes - vector and inserts protist into blood vessles
- causes fevers - fatal
- destroy breeding sites / insecticides/mosquito nets
9
Q
2 bacterial diseases
A
salmonella
gonorrhoea
10
Q
salmonella
A
- its a bacteria that causes food poisoning - vomit/diarrhoea/ fever/cramps
- uncooked chicken
- chickens and turkeys have a vaccination in the uk
11
Q
gonorrhoea
A
- STD
- pain when peeing/yellow discharge from vagina /penis
- treated with penicillin- but now its resistant
- prevent - condom - barrier
12
Q
how to prevent the spread of dieases
A
- hygienic
- vaccines
- isolate infected person
destroy vector
13
Q
features of the body’s defence system
A
- skin - barrier to pathogens
- hairs and mucus - trap pathogens
- trachea and bronchi lined with CILIA - waft mucus
- stomach - hydrochloric acid - kills pathogens
14
Q
3 steps - immune system response
A
- WBC engulf foreign cell and digest them - PHAGOCYTOSIS
- WBC produces antibodies that bind to specific antigen - b lymphocytes and destroys
- now you are immune and you body will recognise if it ever comes again
15
Q
vaccines
A
- inject dead/inactive pathogens that carry antigens causing your WBCs to produce antibodies to attack them