Science

Cell wall

Provides structure and support to the cell.

Cell membrane

Controls what goes in and out of the cell.

cytoplasm

The jelly-like fluid where chemical reactions happen.

Nucules

Stores DNA and acts as the control centre of the cell.

Vacoule

Stores water, nutrients, and waste (large and central in plants).

Chloroplast

Absorbs sunlight to perform photosynthesis and make food.

Solute

The substance that dissolves

Solvent

:The liquid that does the dissolving

Solution

: The mixture formed when the solute dissolves in the solvent

Calculators may be used. Show all working and include units in calculations.

Answers are in the separate marking guide ± try each question before you check.

3

SECTION A: Multiple Choice Questions (10 Marks)

Circle the correct answer. If you change your mind, neatly cross it out and write

the correct answer beside it.