to increase the surface area for absorption of water and minerals

to provide energy for the active transport of minerals

Why do root hair cells have long projections?

Ciliated cells have cilia that move {{mucus}} up and out of the lungs. 

The myelin sheath allows impulses to travel faster.

They are long and thin in shape to carry impulses over a long distance.

They have branched endings to pass signals to other nerve cells.

They have lots of mitochondria to provide energy for impulses to travel faster.

Which statement about nerve cells is **not** correct?

They contain chlorophyll for photosynthesis to take place.

They do not have a nucleus so they can carry more oxygen. 

Which of the following is a feature of a red blood cell?

contains enzymes that digest the egg membrane 

release energy from respiration for movement

Match the sperm cell feature to its function.

chemical pigment called cytoplasm to absorb sunlight

cuboid shaped palisade cells are closely packed together

palisade cells are located at the top of the leaves

Which **two** features allow leaves to absorb light energy efficiently?

Key stage 4

Specialised cells

What is the name of the substance that red blood cells transport around the body?

Which system carries electrical impulses around the body?

Which **two** substances do plants absorb through their roots?

Which organ would you find in the respiratory system?

Photosynthesis takes place inside the sub-cellular structures called {{chloroplasts}}.

uses energy from the Sun to convert carbon dioxide and water into glucose and oxygen

occurs in all living cells. Glucose and oxygen are converted to carbon dioxide and water. 