What is a parasite?

Give an example of a parasite

What are pathogens?

Why are pathogens classed as parasites?

How do pathogens cause damage?

What diseases are most common in developing countries? Why?

What diseases are more common in developed countries? Why?

Is bacteria prokaryote or eukaryote?

How can bacteria cause disease?

Do bacterial diseases make us ill quickly or slowly? Why?

What are viruses?

How do viruses cause damage?

What makes viral diseases hard to treat?

What are protoctistas?

Give an example of a disease caused by protoctistas?

What are saprophytes?

What happens when a plant has a fungal infection?

How do fungal diseases spread rapidly?

What is droplet infection?