Biological Molecules

Question 1

what are carbohydrates made from?

Answer 1

Carbon, Hydrogen and Oxygen.

Question 2

what are simple carbohydrates?

Answer 2

sugars

Question 3

what are the different types of sugars?

Answer 3

glucose, sucrose and maltose

Question 4

what is the ratio of glycerol to fatty acids in a fat molecule?

Answer 4

1:3 (glycerol : fatty acid)

Question 5

when are lipids called fats?

Answer 5

if they are solid at room temperature

Question 6

when are lipids called oils?

Answer 6

if they are liquid at room temperature

Question 7

what are lipids made from?

Answer 7

Carbon, Hydrogen and Oxygen

Question 8

what are proteins made up of?

Answer 8

amino acids

Question 9

how many types of amino acids are there?

Answer 9

about 20

Question 10

what elements make up proteins?

Answer 10

Carbon, Hydrogen, Oxygen and Nitrogen

Question 11

what is protein used for?

Answer 11

growth and repair

Question 12

what are carbohydrates used for?

Answer 12

for energy

Question 13

what are lipids used for?

Answer 13

insulation

Question 14

name some insoluble proteins and where they’re found.

Answer 14

keratin - hair and nails

haemoglobin - red pigment in blood

Question 15

where are carbohydrates found?

Answer 15

bread
rice
pasta

Question 16

where is protein found?

Answer 16

meat
chickpeas
eggs

Question 17

where are lipids found?

Answer 17

butter
peanuts
oil

Question 18

where is vitamin A found?

Answer 18

butter
carrots
cod liver oil

Question 19

why do we need vitamin A?

Answer 19

keeps the cells lining the respiratory system healthy.

Question 20

where is vitamin B found?

Answer 20

liver
wholemeal bread
brown rice

Question 21

why do we need vitamin B?

Answer 21

involved in many chemical reactions around the body

Question 22

where is vitamin C found?

Answer 22

oranges
lemons
raw vegetables

Question 23

why do we need Vitamin C?

Answer 23

keeps tissue in good repair and prevents scurvy.

Question 24

where is vitamin D found?

Answer 24

butter
egg yolk
milk
cheese

Question 25

why do we need vitamin D?

Answer 25

helps calcium and phosphate to be used for making bones.

Question 26

where is calcium found?

Answer 26

milk
cheese
bread

Question 27

why do we need calcium?

Answer 27

for making bones and teeth

Question 28

where is iron found?

Answer 28

liver

egg yolk

Question 29

why do we need iron?

Answer 29

makes haemoglobin

Question 30

where is water found?

Answer 30

cucumber

iceberg lettuce

Question 31

what do we need water?

Answer 31

dissolves substances in cells

Question 32

where is dietary fibre found?

Answer 32

beans
wholegrain bread
root vegetables

Question 33

why do we need dietary fibre?

Answer 33

prevents constipation.

Question 34

what is a balanced diet?

Answer 34

A balanced diet is a healthy diet that provides you with the right amount of energy that contains a variety of food.