Unit C: Disease Defence and Human Health

What exactly are bacteria? What types of bacteria are there? And are they really as bad as people think they are?

An inflammatory response is your body’s attempt to fight invaders. Learn how your body springs into action when attacked!

Learn about the basics of viruses.

The patchwork fur colour of Calico and tortoiseshell cats is an interesting case of genetics, heredity and sex-linked traits.

Learn how chemistry and genetics makes redheads stand out from the crowd.

Celiac disease is an autoimmune disorder. Gluten triggers an immune system response, seriously affecting nutrition.

What are your teeth made up of? What chemistry is at work in your mouth? Why do some people get cavities even if they brush regularly?

Why does drinking too much alcohol make people feel so bad? Read about four theories.

When you cut your finger, your immune system kicks in to protect you from pathogens.

Viruses can make you feel awful! This article explains how feeling bad might be your immune system’s way of helping you heal.

Learn about the measles virus, its impact and vaccination for prevention of the disease.

In April 2016, Let’s Talk Science volunteer Daniel Tarade donated stem cells to help a person who needed a stem cell transplant to survive. Learn what stem cells are, how and why people donate, and what Daniel’s experience was like.

A study on bird feeders and beak sizes shows how an everyday human activity can affect the evolution of another species.