B5 - Viral diseases that you need to know Flashcards
what are pathogens
microorganisms that cause disease
What is a virus
are very small particles capable of infecting every type of living organism
What ype of pathogen is measles
a virus
how is measles spread
airbone-inhalation of droplets from coughs and sneezes
what are they symptoms of measles
fever and red skin rash
what are the complications of measles
can cuase blindness
brain damage
death
what are the treatments/prevention for measles
- no treatment
- person has to be isoalted
what type of pahtogen is hiv
virus
how is hiv spread
sexual contact and exchange of bodily fluids
what are the symptoms of hiv
mid -flu
what are the complications of hiv
the disease can remain hidden and develop into aids .
what are the treatments/prevents for hiv
no vaccine agains tit
-use contraception
-no sharing needles
screening blood used for anitreoviral drug tranfusion ./
what type of pathogen is tobacco mosaic virus
virus
how is tobacco mosaic virus spread
contact between diseased plant material
what are the symptoms of tobacco mosaic virus
distinctive ‘mosaic’ pattern of discoloration on the leaves .
complicaiton of tobacco mosaic virus
reduction in plant growth , reduces yield of crop
-virus remains infectious in the soil for years
what are the treatments / prevention for tobacco mosaic virus
no treatment
farmerss grow tmv resistant strins of many crop plant
-good field hygiene and pest control can prevent the spread of TMV .
what type of pathogen is salmonella food posioning
bacteria
how is salmonella spread
- eating undercooked food
- eating food in unhygienic conditions
- eating food where bacteria isn’t killed by heting
what are the symptoms of salmonella food poisoning
abdominal cramps
vomiting
diarrhoea
what are the complications of salmonella
-fatal for young and elderly due to dehyrdation
treatments/preventio of salmonella
- poultry vaccinated agaisnt salmonella
- kee raw chicken away from cooked foods .
- wash hands and surfaces after handling raw chicken .
what type of pthogen is gonorrhoea
bacteeria
how is gonorrhoea spread
unportected sexual contact with an infected person
symptoms of gonorrhoea
thick yellow green discharge from vagina or penis
-pain when urinating
complications of gonorrhoea
- long term pelvic pain
- infertility
- ectopic pregancies
what are the treatments/preventions ofr gonorrhoea
can be treated iwth antibiotics
using contraception
reducing hte number of partners
what type of pathogen is rose black spot
fungus
what are the symptoms of rose black spot
leaves turn yellow nd droop erly .
-black or purple spots on the leafs surface
what are the complications of rose black spot
reduces the area of leaves available to photosynthesise
what type of pathogen is malaria
protist
what are they symptoms of malaria
recurrent episodes of fever and shaking
what are the complications for malria
the liver
- damages the red blood ceels
- caj be fataal
what are the treatments/preventions for malaria
using insciticdes to kill mosuquitoes
-travellers can take antmalrial drugs
what are fungi
fungi are eukaryotic organisms , some cn cuase disease in animals and plants .
what are protists
protisits are single celled eukaryotic organisms that cuase disease , if they hey ener the body of another organism
what is lage stage HIV
AIDS
What cause late stage HIV
If you have HIV and you are not on HIV treatment
descrie how viruses cause cell damage
when they have infected a suitbale host cell , they replicate themsleves and their dna . These are assmebled into new virus particles . The host cell or cells then brst and the neabry cells are infected w the virus .
why are aniretrovial durgs given to people who ahve hiv
as it stops the virus replicating in the bodoy . Allowing the immune system to repair without experiencing any further damage .
how can the mosaic pttern of discoloration on plnt leaves reedcue plant growth
it infects the chloroplats - turns the colour green chlorophyll yelow reducing the ability of the plant to photosynthesise and grow properly
