Food

Question 1

Biomolecules

Answer 1

Chemicals made by living things.

Question 2

Trace elements (give 3)

Answer 2

Iron, Copper, Zinc

Question 3

Elements in salts (give 3)

Answer 3

Sodium, Magnesium, Chlorine, Potassium, Calcium.

Question 4

Monosaccharide + example

Answer 4

One sugar unit. Glucose/Ribose/Fructose.

Question 5

Disaccharide + example

Answer 5

2 sugar units. Maltose/Sucrose

Question 6

Polysaccharide + example

Answer 6

Many sugar units. Starch/Cellulose/Glycogen

Question 7

Structural role of carbohydrates

Answer 7

Cellulose forms cell walls.

Question 8

Metabolic role of carbohydrates

Answer 8

Glucose gives energy in respiration/ Glycogen stores energy in animals/ Starch stores energy in plants.

Question 9

What elements other than C, O, H or N can protein contain?

Answer 9

Sulfur/ Phosphorus

Question 10

Basic building blocks of protein

Answer 10

Amino acids.

Question 11

Amino acids combine to form ….->….-> and proteins.

Answer 11

peptides-> polypeptides

Question 12

Structural function of proteins

Answer 12

keratin in hair/myosin in muscles

Question 13

Metabolic function of proteins

Answer 13

Enzymes/ antibodies fight infection.

Question 14

Triglyceride structure

Answer 14

1 glycerol, 3 fatty acids

Question 15

Phospholipid structure

Answer 15

1 phosphate group, 1 glycerol, 2 fatty acids.

Question 16

Structural role of lipids

Answer 16

Phospholipids in cell membranes

Question 17

Metabolic role of lipids

Answer 17

Provide energy

Question 18

Water soluble vitamin

Answer 18

C

Question 19

Fat soluble vitamin

Answer 19

D

Question 20

Deficiency of Vitamin C + symptoms

Answer 20

Scurvy; Poor healing of skin, bruising and poor gums with loose teeth.

Question 21

Deficiency of Vitamin D + symptoms

Answer 21

Rickets; Weak brittle bones

Question 22

Minerals needed by plants + use

Answer 22

Calcium- hold cell walls together
Magnesium- make chlorophyll

Question 23

Minerals needed by animals + use

Answer 23

Calcium- forms bones and teeth
Iron- haemoglobin in red blood cells

Question 24

Water functions ( 3)

Answer 24

Component of body fluids/ good solvent/ reaction medium/ transport/ good absorber of heat

Question 25

Anabolic

Answer 25

Make larger molecules from smaller ones using energy eg. photosynthesis

Question 26

Catabolic

Answer 26

Break down larger molecules to form smaller ones with release of energy eg. respiration.