Food

Question 1

Element present in food

Answer 1

Carbon 
Hydrogen 
Oxygen 
Nitrogen 
Phosphorus 
Sulphur

Question 2

Present as dissolved fats

Answer 2

Sodium
Calcium
Magnesium
Potassium

Question 3

Trace elements

Answer 3

Required in small amounts
Copper
Iron
Zinc

Question 4

Biomolecules

Answer 4

Chemical made inside a living thing

Question 5

Fixed ratio carbohydrates

Answer 5

Cx(H2O)y. 2:1

Question 6

Monosaccharide

Answer 6

Single sugar unit

Glucose

Question 7

Disaccharide

Answer 7

Two sugar units

Sucrose or maltose

Question 8

Polysaccharide

Answer 8

Many sugar units
Starch: provides energy
Cellulose: cell wall - structural

Question 9

Triglyceride

Answer 9

1 glycerol

3 fatty acid

Question 10

Phospholipid

Answer 10

1 glycerol
2 fatty acid
1 phosphate

Structural role: structure cell membrane

Question 11

Basic unit of proteins

Answer 11

Amino acid

Question 12

Fibrous protein

Answer 12

No folding

Eg. Keratin - hair/nails

Question 13

Globular protein

Answer 13

Lots of folding

Eg. Enzymes

Question 14

Water soluble vitamin

Answer 14

C - fresh fruit
Metabolic role: immune system / connective tissues
Lack: scurvy

Question 15

Fat soluble

Answer 15

D - fish
Metabolic role: absorb calcium / healthy bones
Lack: rickets

Question 16

Minerals in plants

Answer 16

Calcium - binds cell wall

Magnesium - chlorophyll

Question 17

Minerals in animals

Answer 17

Calcium : strong bones

Iron: haemoglobin

Question 18

Anabolic reaction

Answer 18

Smaller into larger molecules

Photosynthesis / proteinsynthesis

Question 19

Catabolic

Answer 19

Complex molecule broken into simpler

Respiration / digestion