B5 Communicable Diseases GCSE Biology

Pathogens are microbes that cause disease

• True

• False

Which is NOT a pathogen?

• virus

• bacteria

• fungi

• protist

• germs

Pathogens can be spread by...

• direct contact

• by water

• by air

• all three

Viruses are bigger than bacteria

• True

• False

Neither bacteria nor viruses have a nucleus in their cells

• True

• False

Bacteria and viruses may reproduce rapidly inside the body

• True

• False

Viruses may produce poisons (toxins) that damage tissues and make us feel ill

• True

• False

Viruses live and reproduce inside cells, causing cell damage.

• True

• False

What kind of pathogen causes the disease athlete's foot?

• Fungi

• Protozoa

• Rickettsias

• Virus

What is an organism that carries or transmits pathogens to humans or other animals

• Protozoa

• Bacteria

• Vector

• Fungus