1.
Smooth tissue found at the end of bones, which reduces friction between them.
2.
Layer around a cell that controls substances entering and leaving the cell.
3.
Tough outer layer of plant cells, made of cellulose.
4.
Structure in plant cells where light is absorbed so that photosynthesis can produce food.
5.
The jelly-like main component of cells, where most of the chemical processes occur.
7.
Structures in a cell that release energy.
8.
Part of a cell that contains the genetic material (DNA) which controls the cell's activities.
9.
Connects muscle to bone.
10.
Part of a cell that contains liquid and can be used by cells to keep the cell rigid.
11.
Allows backward, forward, sideways, and rotating movements such as the shoulder and hip joints.
12.
the type of joint in the elbow and knee
13.
the type of joint in the skull
14.
a pair of muscles that work together
