Food and digestion

The movement of small molecules of nutrients through the walls of the alimentary canal, into the body.

• absorption

• digestion

• digestive system

A nutrient found in meat, fish, dairy products, beans and eggs, used in the body to make new cells.

• protein

• carbohydrates

• fibre

The hard, outer layer of a tooth.

• dentine

• enamel

• fibre

Breaking down large food molecules into small ones.

A biological catalyst.

• enzyme

• molecule

A type of carbohydrate with molecules made up of many sugar molecules linked in a long chain.

• starch

• protein

• amylase

A nutrient that helps food to keep moving through the alimentary canal.

• fibre

• starch

• protein

A deficiency disease caused by a lack of vitamin C in the diet.

• scurvy

• rickets

• night blindness

One of the small molecules which, when linked into a long chain, makes up a protein molecule.

• starch

• amino acid

All of the organs involved in digestion and absorption.