Food and digestion

Question 1

What is digestion?

Answer 1

It is the breaking up of large insoluble food molecules into small soluble food molecules.

Question 2

What are the two types of digestion?

Answer 2

Mechanical digestion and chemical digestion.

Question 3

What is mechanical digestion?

Answer 3

Where muscles are involved in a physical process eg) Chewing, Peristalsis, Stomach churning e.t.c.

Question 4

What is chemical digestion?

Answer 4

Chemical digestion involves enzymes.

Question 5

What is an enzyme?

Answer 5

An enzyme is a molecule (protein) that speeds up a reaction (catalyst).

Question 6

What is a catalyst?

Answer 6

A catalyst is a substance that speeds up a reaction without being used up

Question 7

What are the seven food components for a balanced diet?

Answer 7

Protein
Carbohydrates
Fats (Lipids)
Fibre
Vitamins
Minerals
Water

Question 8

Where are proteins found?

Answer 8

Meats, fish, pulses, tofu, insects

Question 9

Where are fats found?

Answer 9

Oils, avacado, red meat, butter, cheese, milk

Question 10

Where is fibre found?

Answer 10

Brown rice, brown bread, porridge, cereals, fruits

Question 11

Where are vitamins found?

Answer 11

Fruit, vegetables, red meat, seeds, plant oils

Question 12

Where are mineral ions found?

Answer 12

Certain meats, vegetables, fruits, supplements, salts

Question 13

Label this diagram
What is
a
b
C
D
E

Answer 13

A liver
B pancreas
C small intestine
D large intestine
E rectum

Question 14

What is nutrition?

Answer 14

Nutrition is what you eat.

Question 15

What is a balanced diet?

Answer 15

A balanced diet is having the right amount of nutrients. These nutrients are proteins, carbohydrates, fibre, vitamins, water, minerals and fats.

Question 16

What are carbohydrates needed for?

Answer 16

Carbohydrates provide energy for your body. Active or growing people need lots of carbohydrates to sustain the energy they are using up.

Question 17

What are proteins needed for?

Answer 17

Proteins are vital for growth and repair of muscles.

Question 18

What are fats (lipids) needed for?

Answer 18

Fats (lipids) act as a store of energy, which could be used if your body runs out of carbohydrates.

Question 19

What are vitamins needed for?

Answer 19

Vitamins are needed to keep many vital processes happening and are essential for health.

Question 20

What are minerals needed for?

Answer 20

Minerals are needed to keep many vital processes happening and are essential for health.

Question 21

What is fibre needed for?

Answer 21

Fibre helps food move through your digestive system.

Question 22

What are the food groups? ( seven)

Answer 22

Question 23

What is a balanced diet?

Answer 23

Question 24

The seven nutritional groups

Answer 24

Question 25

What is malnutrition?

Answer 25

Condition where a person’s diet does not contain the right amount of nutrients It can be under-nutrition OR over nutrition

Question 26

What is under nutrition?

Answer 26

Question 27

What can happen to people with malnutrition?

Answer 27

Question 28

What diseases can occur with over nutrition?

Answer 28

Question 29

Answer 29

Question 30

Answer 30

Breakfast cereal Peas Carrots Oats Bananas

Question 31

question is picture:

Answer 31

a) F b) T c) F d) F e) T f) F g) T

Question 32

Jason has been ill, and his doctor has suggested that he needs to take vitamins Suggest two types of food that contain a lot of vitamins.

Answer 32

Vegetables / fruit / cereals

Question 33

The doctor suggests that Jason should get more vitamin C in particular. Give one role of vitamin C in the body.

Answer 33

• Vitamin C helps wound healing and can help your immune system.

Question 34

Answer 34

Iron blood Sodium nerves Calcium bones and teeth

Question 35

Emma has fish and chips for her dinner three times a week. (a) Which is a better source of protein - the fish or the chips?

Answer 35

Fish

Question 36

) Most of the fat in the chips is saturated fat. Most of the fat in fish is unsaturated fat. Based on this information, are the chips or the fish better for Emma's health? Explain your answer.

Answer 36

Fat Butter / cooking oil / cream There are two types of fats: 1) Saturated fats, found in foods such as butter and cream - it can be bad for your health if you eat too many of these. 2) Unsaturated fats, found in olive oil and nuts these are better for you than saturated fats so you can eat more of them.

Question 37

(c) Emma drinks a glass of water with her dinner. How may Emma feel if she doesn't drink enough water every day?

Answer 37

• If you don't get enough water you can get dehydrated. The symptoms of dehydration include bad headaches, dizziness and tiredness.

Question 38

Here is some information for you to learn

Answer 38

Lipids act as a store of energy - which you use if your body runs out of carbohydrates. Fibre helps food move through your digestive system. Meat / eggs / fish / eggs/ milk/ cheese are good sources of protein About 75% of your body is water and all chemi reactions (e.g. digestion), take place in water. Vitamins are only needed in very small amounts Carbohydrates are like fuel (energy) for your body.

Question 39

Answer 39

Question 40

Answer 40

Question 41

Answer 41