Bio Quiz

Question 1

Circulatory system functions

Answer 1

A transport system (like a highway) carrying molecules throughout the body.

It has two primary functions: to deliver oxygen & nutrients to cells and to take away wastes.

Question 2

Digestive system functions

Answer 2

Breaks down food into simpler components to be used by cells in the body.
The broken-down food can be absorbed into the bloodstream from the small intestine or are passed out of the body as waste.

Question 3

Respiratory system functions

Answer 3

Brings in oxygen and removes CO2 from the body for gas exchange.

Oxygen switches places in the bloodstream with CO2, as oxygen is needed for cellular respiration.

Question 4

How they work together

Answer 4

The respiratory system brings in oxygen, which the circulatory system carries to cells.
The digestive system breaks down food into nutrients, which the circulatory system transports to cells.
Tissues in your intestine and lungs work together to defend your body against sickness.