The Digestive System

Question 1

What is meant by a balanced diet

Answer 1

A diet that includes every nutrient

Question 2

The importance of carbohydrates

Answer 2

Source of energy

Question 3

Function of fats and oils

Answer 3

Energy store

Question 4

Importance of proteins

Answer 4

Growth and development of cells

Question 5

Importance of vitamins C and D

Answer 5

Strengthen bones and keep up immune system

Question 6

Importance of calcium and iron

Answer 6

Formation of haemoglobin and bone strength

Question 7

Importance of water

Answer 7

Chemical reactions to take place

Question 8

Importance of fibre

Answer 8

Movement of food along the alimentary canal

Question 9

Causes of scurvy

Answer 9

Deficiency of vitamin C

Question 10

Causes of rickets

Answer 10

Deficiency of vitamin D

Question 11

Function of ingestion

Answer 11

Taking in of substances

Question 12

Function of digestion

Answer 12

The breakdown of food

Question 13

Function of absorption

Answer 13

Movement of nutrients from intestine into the blood

Question 14

Function of assimilation

Answer 14

Uptake of nutrients by cells

Question 15

Function of egestion

Answer 15

Removal of undigested food as faeces

Question 16

What part of the body is ingestion taken by

Answer 16

The mouth

Question 17

What part of the body is digestion taken by

Answer 17

The stomach

Question 18

Where does absorption start from

Answer 18

The small intestine

Question 19

Describe physical digestion

Answer 19

The breakdown of food into smaller pieces

Question 20

What does physical digestion do

Answer 20

Increase the surface area of food for the action of enzymes

Question 21

Describe chemical digestion

Answer 21

The breakdown of insoluble molecules into soluble molecules

Question 22

The role of chemical digestion

Answer 22

Producing small soluble molecules that can be absorbed

Question 23

Function of the amylase enzyme

Answer 23

Break down of starch to simple sugars

Question 24

Function of protein

Answer 24

Breakdown protein to amino acids

Question 25

Function of lipase

Answer 25

Breakdown of fats to fatty acids

Question 26

Where are amylase, protease, and lipase secreted

Answer 26

In the pancreatic juice

Question 27

Functions of hydrochloric acid

Answer 27

Killing harmful microorganisms in food and provide an optimum pH for enzyme function

Question 28

What is bile

Answer 28

An alkaline mixture that neutralises the acid added to the food giving the best pH for enzymes to work

Question 29

The role of bile

Answer 29

Emulsifying fats to increase surface area for chemical digestion