Digestive System

Question 1

Stages of nutrition: getting energy from our food

Answer 1

1. Ingestion/eating: food is taken in by the body.
2. Digestion: food is broken down.
3. Absorption: Digested food passes into the bloodstream.
4. Assimilation: using food in the cells of the body.
5. Elimination: getting rid of undigested food.

Question 2

Physical digestion

Answer 2

Taking large pieces of food and breaking them down into smaller pieces. Happens in the:
* mouth (teeth)
* stomach

Question 3

How enzymes work

Answer 3

Enzymes act on a substrate and breaks it down into a product e.g. substrate= starch, enzyme= amylase(saliva), product= maltose(sugar)

Question 4

Enzymes

Answer 4

Enzymes are chemicals that speed up reactions without being used up in the reaction

Question 5

Most chemical digestion happens in the ……

Answer 5

Small intestine

Question 6

Bile

Answer 6

Made in the liver to break down fats

Question 7

Pancreas

Answer 7

Makes digestive juices which contain enzymes