Bones
Muscles
Teeth
Cells
Hierarchy of Life
100

Bone in the upper arm.

What is the humerus?

100

This group of muscles are on your belly and are sometimes called a "six-pack" 

What are the abdominals?

or 

What are the abs?

100

The tooth has two parts. This one is visible.

What is the crown ?

100

This is only found in the plant cell. It protects and supports the cell.

What is the cell wall?

100

The smallest unit of life

What is a cell?

200

The group of bones in your head.

What is the skull?

or

What is the cranium?

200

These muscles are in the front part of your upper arm?

What are the biceps?

200

The hardest substance in the human body is found in your mouth. It's on the surface of all teeth.

What is the enamel?

200

This is only found in plant cells: it uses photosynthesis to produce energy.

What is the chloroplast?

200

It is formed by a group of cells with similar structures and functions.

What is tissue?

300

The bones of your lower arm.

What are the radius and the ulna?

300

These muscles are in your chest.

What are pectorals?

300

This part inside the tooth is made up of connective tissue, blood vessels and nerve fibers.

What is the pulp?

300

This part of the cell separates the cell from its environment and regulates the movement of substances in and out of the cell.

What is the cell menbrane?

300

Structures that are specialised in fulfilling specific functions in the body. Made up of more than one kind of tissue. (The heart and the lungs are both examples)

What are organs?

400

Bones of the lower leg.

What are the fibula and tibia?

400

These muscles are located in the rear, lower part of your legs.

What are the calves?

or

What are the calf muscles?

400

The tooth has two parts, this one is invisible when you smile.

What is the root?

400

This is the most important organelle because it contains chromosomes and interprets DNA.

What is the nucleus?

400

Term used to describe the parts of Earth where living organisms can be found.

What is the biosphere?

500

Little bone on your knee.

What is the patella?

500

These muscles are located in the rear, upper part of your arms.

What are the triceps?

500

The layer found under the enamel.

What is dentine?

500

The part of a cell that breaks down unnecessary substances.

What is a lysosome?

500

A group of individuals of the same species that live in the same area.

What is a population?