Nutrition in Animals Key Words

Question 1

Balanced Diet

Answer 1

A diet that contains all 7 food groups, in the right proportions

Question 2

Digestion

Answer 2

A process by which large insoluble food molecules are broken down into small soluble food molecules

Question 3

Mechanical Digestion

Answer 3

Chewing breaks up the food we eat into smaller pieces. This occurs in the mouth and stomach.

Question 4

Chemical digestion

Answer 4

Large insoluble food molecules are broken down into smaller soluble molecules by the action of the digestive enzymes

Question 5

Enzyme

Answer 5

A biological catalyst that speeds ip the rate of reaction

Question 6

Peristalsis

Answer 6

Food is moved from the oesophagus and along the alimentary canal. These canals have layers of circular muscles which can contract to change shape to allow food to pass through.

Question 7

Absorption

Answer 7

Substances are taken through the tissues into organs or cells

Question 8

Assimilation

Answer 8

The process by which absorbed products of digestion are used to build new parts of cells.

Question 9

Bile

Answer 9

Produced by the liver and stored in the gall bladder. Neutralises the acid from the stomach and breaks up large fat droplets into small fat droplets.

Question 10

Egestion

Answer 10

The removal of undigested food from the body

Question 11

Ingestion

Answer 11

The consumption of a substance by an organism