Cells and cell transport 1

Dr Jolly

State the function of a chloroplast in cells.

Site of photosynthesis.

When investigating the effect of sugar solution on osmosis in potato cylinders, name the independent variable.

Concentration of sugar solution

Name two eukaryotic cells.

Plant and animal cells

State the function of the cell wall in plant cells.

Strengthens the cell.

When investigating the effect of sugar solution on osmosis in potato cylinders, name the variables that need to be controlled.

Volume of sugar solution, temperature of solution, length of potato cylinders, time the potato cylinders are left in the solution

State the function of the permanent vacuole in plant cells.

Stores cell sap and water.

Define osmosis.

Movement of water molecules from a dilute solution to a concentrated solution through a partially permeable memrane.

When investigating the effect of sugar solution on osmosis in potato cylinders, name the dependent variable.

Change in mass of potato cylinders

State what the cell wall in plant cells is made of.

Cellulose

Why do the potato cylinders need to be dried before measuring their mass?

To remove excess water, which can affect results.