Digestive System

Question 1

Ingestion/eating

Answer 1

Food is taken in by the body.

Question 2

Digestion

Answer 2

Food is broken down.

Question 3

Absorption

Answer 3

Digested food passes into the bloodstream.

Question 4

Assimilation

Answer 4

Using the food in the cells of the body.

Question 5

Elimination

Answer 5

Getting rid of undigested food.

Question 6

Physical digestion.

Answer 6

Involves the use of chemicals called enzymes to break down food.

Question 7

Enzymes

Answer 7

Are chemicals that speed up reactions without being used up in the reaction.

Question 8

How enzymes work

Answer 8

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

Question 9

Most chemical digestion happens in

Answer 9

Small intestine.

Question 10

Bile

Answer 10

Made in liver to break down fats.

Question 11

Pancreas makes

Answer 11

Digestive juices which contain enzymes.

Question 12

Incisors

Answer 12

At the front of the mouth
4 upper 4 lower
Used for biting and cutting food.

Question 13

Canine

Answer 13

One at either side of the incisors.
2 upper and 2 lower.
Grasp and tear food.

Question 14

Pre-Molar

Answer 14

3 at either side of the canine.
6 upper and 6 lower.
Grind and crush food.

Question 15

Molars

Answer 15

2 at either side of the premolars
4 upper and 4 lower.
Grind and crush food.

Question 16

Herbivore

Answer 16

Only eats plant
Very large incisors
Large molars and pre-molars to chew grass e.g. sheep.

Question 17

Carnivore

Answer 17

Only eats meat
Large canine teeth
Use the teeth to catch and tear their pray.