communicable diseases Flashcards
What is a pathogen?
A micro-organism that invades your body and causes infectious disease.
What are the 4 types of pathogens?
Bacteria
Viruses
Fungi
Protists
How do diseases spread? (Include DAFT)
Droplets
Animals
Food
Touch
What does MRSGREN stand for? (features of living organisms)
Movement
Respiration
Sensitivity
Growth
Respiration
Excretion
Nutrition
Describe 2 ways bacteria can effect the body. (3)
Produce toxins that make us feel ill.
Damage our body cells.
Reproduce easily.
Describe ways in which viruses can effect the body.
Need a host to multiply.
Reproduce inside cells until they burst.
Kill nerves (brain to lungs preventing breathing)
Describe ways in which fungi is harmful to the body.
Produce hyphae that penetrate skin.
Tissue damage.
Spread via spores.
Describe ways in which protists harm the body.
Tissue damage (by living on or inside organisms)
spread via vector (doesn’t get the disease.)
E.g Malaria.
Name 2 diseases that effect plants.
Rose Black Spot
TMV (Tobacco Mosaic Virus)
Name 2 symptoms of Salmonella.
Fever
Diarrhoea
Cramps
What transmits Salmonella? (2 examples)
Unwashed hands
handling raw meat
Handling animals
Other organisms.
Preventions of Salmonella. (2)
Wash hands after handling meat.
Antibiotics
Wash hands after toilet.
Wash kitchen utensils.
What is Gonorrhoea?
An STD that effects both men and women when having unprotected sex and effects the genitals.
What symptoms is there for Gonorrhoea? (2)
Pain when urinating.
Thick yellow/green discharge from genitals.
