Lesson: Keeping pathogens out

Lesson: Keeping pathogens out

Multiple Choice

What is a communicable disease?

• Communicable diseases are caused by microorganisms.

• Communicable diseases are caused by genetics

• Communicable diseases are caused by lifestyle factors.

Multiple Choice

How are bacterial infections transmitted?

• Contaminated surfaces

• Contaminated food and water

• Airborne droplets

Multiple Select

Choose all the microorganisms.

• Bacteria

• Fungi

• Mutated DNA

• Parasite

• Virus

Multiple Choice

Which disease cannot be described as a communicable disease?

• The flu

• Athletes foot

• Lung cancer

• Tonsilitis

Lesson outcomes

• Explain the role of the immune of the immune system of the human body in defence against disease

• Explain how white blood cells are adapted to their function in the blood, including what they do and how it helps protect against disease. 

What do you notice about the shape of the antigens on the body cell compared to the pathogen?

The shape of antigens

• Both receptors and antigens are found on the surface of body cells (including white blood cells).

Open Ended

What are antigens?

Multiple Choice

Where are antigens found?

• On the cell surface of body cells and white blood cells only.

• On the cell surface of body cells, white blood cells and the pathogen.

• On the cell surface of body cells

Multiple Choice

How are the antigens on body cells different from the antigens on pathogen cells?

• They have the same shape antigen

• They both don't have antigens

• They have the different shaped antigen

Open Ended

How do white blood cells distinguish between self and non-self?