Levels of Organisation
Circulatory System
Digestive System
Respiratory System
General Knowledge
100

This is the smallest level of organisation in living things.

Cell

100

This organ pumps blood around the body.

Heart

100

This organ breaks down food using acid.

Stomach

100

Humans breathe in this gas.

Oxygen

100

8 x 9

72

200

In between "cells" and "organs"

Tissue

200

Blood carries this gas from the lungs to body cells.

Oxygen

200

Digestion begins in this body part.

Mouth

200

This waste gas is breathed out.

Carbon dioxide

200

Miss Bautista's race/ ethincity

Filipino

300

This level is made of different tissues working together.

Organ

300

These vessels carry blood away from the heart.

Arteries

300

Most nutrients are absorbed in this organ.

Small intestine

300

Definition of 'respiratory' 

How we breathe

300

The name of the current pope

Pope Leo XIV

400

Specialised cells are...

Cells with specific functions and structures

400

The circulatory system works closely with this system to supply oxygen.

Respiratory system

400

This system works with the digestive system to deliver nutrients around the body.

The circulatory system

400

Tiny air sacs in the lungs where gas exchange occurs are called these.

Alveoli

400

Population of Sydney

5.63 million (accepting 5 & 6 mil)

500

"Unicellular organisms have organs" (T/F)

False! (They are made up of one cell)

500

This component of blood helps fight infection.

White blood cells

500

Heterotrophs means...

Unable to produce our own food - we obtain it from other sources

500

This muscle below the lungs helps breathing occur.

Diaphragm

500

This animal can sleep for up to 20 hours a day and somehow still looks exhausted.

Koala