Biology - Diseases

Question 1

What are the 4 types of pathogen?

Answer 1

Virus
Bacteria
Fungi
Protists

Question 2

What are the 3 types of viral infections?

Answer 2

HIV- sexually transmitted, needles, blood
Flu like symptoms after years
Take antiretroviral drugs in that period to stop spreading
Attacks immune system

Measles - droplets in coughing
Rash
Fever
Vaccinated when child

Tobacco mosaic virus
- mosaic pattern in plants
- plants can’t carry out photosynthesis so struggle to grow

Question 3

What are the two types of bacterial diseases?

Answer 3

Salmonella - unhygienic preparation, diseased chicken
- food poisoning
- stomach cramps
- vomiting
- fever

Gonorrhoea - sexually transmitted
- pain when urinating
- yellow or green discharge
- used to be treated with penicillin but grown resistant

Question 4

How can disease be prevented?

Answer 4

Hygienic
Destroying vectors
Isolating infected people
Vaccines

Question 5

Name a fungal disease

Answer 5

Rose black spot - purple and black spots on roses
- less photosynthesis means it doesn’t grow
- can be stopped by fungicides or by stripping plants
- transferee by wind and water

Question 6

Name a protist disease

Answer 6

Malaria - repeating episodes of fever and can be fatal
Infects liver and red blood cells hiding from immune system
Stays dormant in humans