Feed The World N4

Question 1

Where do elements we are made of come from?

Answer 1

The food we eat

Question 2

What percentage of oxygen are we?

Answer 2

65%

Question 3

What percentage of hydrogen are we?

Answer 3

10%

Question 4

What percentage of nitrogen are we?

Answer 4

3%

Question 5

What percentage of calcium are we?

Answer 5

2%

Question 6

What percentage of carbon are we?

Answer 6

18%

Question 7

What percentage of phosphorus are we?

Answer 7

1%

Question 8

What percentage of sulphur are we?

Answer 8

0.25%

Question 9

What percentage of potassium are we?

Answer 9

0.35%

Question 10

What percentage of other elements are we?

Answer 10

0.31%

Question 11

What are carbohydrates needed for?

Answer 11

Energy

Question 12

What is fibre needed for?

Answer 12

For healthy diet, food to pass through digestive system, prevents constipation and heart disease

Question 13

What is protein needed for?

Answer 13

Cell growth and repair damaged tissues

Question 14

What are lipids/fats and oils needed for?

Answer 14

Energy

Question 15

What are vitamins needed for?

Answer 15

Vit K - helps blood clot
Vit C - prevents illness

Question 16

What is water needed for?

Answer 16

Replacing urine, sweat and breathing out

Question 17

What are carbohydrates made up from?

Answer 17

Carbon, hydrogen and oxygen

Question 18

What are the 2 main carbohydrates

Answer 18

Simple carbohydrates and complex carbohydrates

Question 19

Explain starch and sugar

Answer 19

Starch is really long and complex but sugar is small and simple

Question 20

What is a positive iodine test colour change?

Answer 20

Brown orange ~> purple/blue

Question 21

What is a positive Benedict’s test colour change?

Answer 21

Bright blue ~> brick red

Question 22

What does iodine test for?

Answer 22

Starch

Question 23

What does Benedict’s test for?

Answer 23

Glucose, maltose, fructose

Question 24

What is an insomer

Answer 24

Compound with the same molecular formula but different structure

Question 25

Glucose and fructose are….?

Answer 25

Monosaccharides and insomers of eachother

Question 26

Glucose and Fructose have a formula of..?

Answer 26

C6H12O6

Question 27

Maltose and Sucrose are….?

Answer 27

Disaccharides

Question 28

Maltose and Sucrose have a formula of…?

Answer 28

C12H22O11

Question 29

How is sucrose formed??

Answer 29

Condensation reaction when glucose and fructose combine?

Question 30

What is the formula of sucrose formation?

Answer 30

C6H12O6 + C6H12O6 ~> C12H22O11 + H2O

Question 31

What’s the molecular formula of starch?

Answer 31

(C6H10O5)n

Question 32

What are the 4 main elements in our body?

Answer 32

Carbon, Hydrogen, Oxygen and Nitrogen

Question 33

What’s the most common compound in our body?

Answer 33

Water

Question 34

What is soluble and gets into the bloodstream quickly

Answer 34

Sugar

Question 35

What isn’t soluble and breaks down slowly into soluble sugars?

Answer 35

Starch

Question 36

Energy contents shown on food and drink are measured in??

Answer 36

KJ

Question 37

What is the colour change in a successful biuret test?

Answer 37

Light blue ~> lilac

Question 38

What does biuret test for?

Answer 38

Proteins

Question 39

What makes up your muscles?

Answer 39

Actin and myocin

Question 40

What makes up ligaments?

Answer 40

Elastin

Question 41

What are hair and nails made up from?

Answer 41

Keratin

Question 42

Skin contains…?

Answer 42

Collagen

Question 43

What controls blood and sugar levels

Answer 43

insulin

Question 44

What breaks our foods down?

Answer 44

Trypsin, Amylase

Question 45

What helps red blood cells carry oxygen around the body?

Answer 45

Haemolglobin

Question 46

Vitamins are..?

Answer 46

Organic compounds

Question 47

Minerals are…?

Answer 47

Inorganic compounds

Question 48

Vitamin C is needed for??

Answer 48

Healthy membrane, lack can cause scurvy, the source is citrus fruit

Question 49

What causes rickets and bendy bones

Answer 49

A lack of Vitamin D

Question 50

Where does Vitamin D come from

Answer 50

The sun

Question 51

Where can vitamin A be found?

Answer 51

Carrots and fatty foods such as fish and margarine

Question 52

A lack of vitamin A can cause?

Answer 52

Poor night vision

Question 53

What does Beri Beri and pellagra come from?

Answer 53

Lack of vitamin B

Question 54

What does Vitamin K do?

Answer 54

Helps your blood clot

Question 55

What can a lack of vitamin K cause?

Answer 55

Uncontrolled bleeding from tissues

Question 56

Which vitamin lowers the risk of cancer

Answer 56

Vitamin E

Question 57

Calcium keeps…..?

Answer 57

Teeth and bones strong

Question 58

Where is calcium found?

Answer 58

Dairy (milk and cheese)

Question 59

A lack of calcium can cause..?

Answer 59

Brittle bones

Question 60

Why is iron important?

Answer 60

Iron is needed for oxygen travelling around the body

Question 61

What’s an iron deficiency called?

Answer 61

Anemia

Question 62

Why is land for farming limited??

Answer 62

Areas are too cold, too hot, too dry, too salty, too acidic or too heavily populated

Question 63

What three elements are essential for plant growth

Answer 63

Nitrogen, phosphorus and potassium