FEED THE WORLD L4

Question 1

What are carbohydrates made from?

Answer 1

Carbon , hydrogen and oxygen

Question 2

How to test for carbohydrates

Answer 2

Iodine or Benedict’s reagent

Question 3

What does iodine test for

Answer 3

Starch

Question 4

What does Benedict’s test for

Answer 4

Glucose, maltose and fructose

Question 5

What’s the colour change in iodine

Answer 5

Orange ->blue/black

Question 6

What’s the colour change in Benedict’s test

Answer 6

Blue->brick red

Question 7

What do carbohydrates provide us

Answer 7

Energy

Question 8

What are the two types of carbohydrates

Answer 8

Starch and sugar

Question 9

What is an isomer

Answer 9

A compound with the same molecular formula but a different structure

Question 10

What sugar does Benedict’s solution not test for

Answer 10

Sucrose as it’s too complex

Question 11

What are glucose and fructose

Answer 11

Monosaccharides and isomers of each other

Question 12

What is glucose and fructose’s formula

Answer 12

C6H12O6

Question 13

Maltose and sucrose are what ?

Answer 13

Disaccharides and are isomers of each other

Question 14

What is sucrose’s and maltose’s formula

Answer 14

C12H22O11

Question 15

How is sucrose formed

Answer 15

Sucrose is formed in a condensation reaction when glucose and fructose combine

Question 16

What’s the formula for sucrose

Answer 16

C12H22O11+H2O

Question 17

What’s the formula for starch

Answer 17

(C6H10O5)n

Question 18

What are the four main elements in your body

Answer 18

Carbon, hydrogen, oxygen and nitrogen

Question 19

What are the 2 compounds that are important to our diet

Answer 19

Carbohydrates and fat

Question 20

What is calcium necessary for

Answer 20

Healthy bones and teeth

Question 21

What is needed for red blood cells

Answer 21

Iron

Question 22

What helps carry oxygen around the body

Answer 22

Iron

Question 23

Is sugar soluble

Answer 23

Yes

Question 24

Is starch soluble

Answer 24

No

Question 25

Fast or slow energy release
Sugar

Answer 25

Fast

Question 26

Fast or slow energy release
Starch

Answer 26

Slow

Question 27

Which sex needs more energy

Answer 27

Male

Question 28

Birut regent can identify …?

Answer 28

Protein

Question 29

What is the colour change in Birut reagent test for protein

Answer 29

Light blue->lilac

Question 30

What protein makes up our muscles

Answer 30

Actin and myosin

Question 31

What protein makes our ligaments

Answer 31

Elastin it holds our bones together

Question 32

What makes up our hair and nails

Answer 32

Keratin

Question 33

What makes our skin stretchy

Answer 33

Collagen

Question 34

What controls sugar levels

Answer 34

Insulin

Question 35

What enzymes break down food

Answer 35

Trypsin and amylase

Question 36

What protein helps carry oxygen and red blood cells around the body

Answer 36

Haemoglobin

Question 37

How many amino acids are there

Answer 37

20

Question 38

Vitamins are organic
True or false

Answer 38

True

Question 39

What is vitamin C for

Answer 39

Healthy membranes

Question 40

Lack of vitamin C causes

Answer 40

Scurvy

Question 41

Source of vitamin c

Answer 41

Citrus fruits

Question 42

What is vitamin D used for

Answer 42

Strong bones

Question 43

What is the lack of vitamin d

Answer 43

Rickets

Question 44

Source of vitamin d

Answer 44

Sunlight on skin or fatty food like oily fish