Edexcel Pathogens & Defence

A communicable disease:

• can be spread from person to person.

• can not be spread from person to person.

• Is caused by genetic factors.

• effects the mouth and throat.

What type of pathogen causes Chalara dieback (in ash trees)?

• virus

• bacteria

• fungi

• protist

Tags

NGSS.MS-LS2-4

How is cholera usually spread from person to person?

• Kissing

• Coughs and sneezes

• Shaking hands

• Contaminated water

What name is given to animals that transmit infection?

• vectors
• infectious
• host
• intermediary

The ________ is the first line of defense.

• eyes
• stomach
• t-cells
• skin

What is the role of nasal mucus?

• collect dead cells

• lubricate the nasal passage

• make phlegm

• trap particles

I am a physical barrier that stops pathogens entering the body

• White blood cells

• Mucus

• Hydrochloric acid

• Lysozyme enzymes

What am I? I am found in the lungs. I sweep mucus back up towards the throat so it can be coughed out or swallowed.

• Mucus

• Lysozyme enzymes

• Hydrochloric acid

• Cilia

What am I? I am a chemical defence found in tears. I am also secreted by glands onto the surface of our skin.

• Mucus

• Lysozyme enzymes

• Hydrochloric acid

• Cilia