Grade 9 Unit 3

Question 1

the energy supplier in sports and health drinks.

Answer 1

Glucose

Question 2

They often form very compact molecules that are ideal for storing energy

Answer 2

Complex sugars

Question 3

It is the only carbohydrate energy store found in animals

Answer 3

Glycogen

Question 4

colour of iodine solution is

Answer 4

brown

Question 5

cheese and milk as well as pulses, such as white pea beans, chick peas and red kidney beans are

Answer 5

Proteins

Question 6

are used for body-building

Answer 6

Proteins

Question 7

when amino acids are joined together in a condensation reaction and a molecule of water is lost

Answer 7

peptide link

Question 8

in connective tissue, in tendons and the matrix of bones (collagen), in the structure of muscles, in the silk of spiders’ webs and silkworm cocoons and as the keratin that makes up hair, nails, horns and feathers.

Answer 8

Proteins insoluble in water

Question 9

form antibodies, enzymes and some hormones, and are also important for maintaining the structure of the cytoplasm in your cells.

Answer 9

Proteins soluble in water

Question 10

caused by a lack of protein in the diet even if the overall energy intake is reasonable.

Answer 10

Kwashiorkor

Question 11

play vital roles as hormones, in your cell membranes and in the nervous system.

Answer 11

Lipids

Question 12

considerably lower proportion of oxygen in ______ molecules

Answer 12

Lipid

Question 13

chemical formula C3H8O3

Answer 13

Glycerol

Question 14

– a pleated backbone of carbon atoms with hydrogen atoms attached.

Answer 14

long hydrocarbon chain

Question 15

is a substance which you make in your liver.

Answer 15

Cholesterol

Question 16

You need it to make the membranes of your body cells, your sex hormones and the hormones which help your body deal with stress.

Answer 16

Cholesterol

Question 17

where the bones stay soft and cannot support the weight of the body so the legs become bowed.

Answer 17

rickets

Question 18

Daily products, fish, bread, vegetables r rich in

Answer 18

Calcium

Question 19

Making bone n teeth is role of

Answer 19

Ca, P, Mg

Question 20

What mineral is part of many chemicals like dna

Answer 20

Phosphorus

Question 21

Failure of metabolism is effect of which mineral

Answer 21

Phosphorus

Question 22

Which minerals got role in body fluids

Answer 22

Na, Cl

Question 23

Which minerals deficiency have effects of muscle cramps

Answer 23

Na, Cl

Question 24

Which mineral deficiency causes skeletal problems, cell chemistry affected, defects in metabolism

Answer 24

Mg

Question 25

Eggs, green leafy vegetables like spinach r examples for which mineral

Answer 25

Fe

Question 26

Which vitamin protects the surface of the eye

Answer 26

A

Question 27

Which vitamin helps with cell respiration

Answer 27

B1

Question 28

Which vitamin sticks together cell lining surfaces like mouth

Answer 28

C

Question 29

Which vitamin helps bones absorb calcium n phosphorus

Answer 29

D

Question 30

Fish, liver, oils, liver, butter, margarine r examples for which vitamin

Answer 30

A

Question 31

Yeast extracts n cereals r examples for which vitamin

Answer 31

B1

Question 32

Fish liver oils, skin in sunlight r sources of which vitamin

Answer 32

D

Question 33

Which vitamin deficiency causes damaged cornea

Answer 33

A

Question 34

Which vitamin deficiency causes rickets even tho the kid takes lot of calcium

Answer 34

D

Question 35

Which vitamin deficiency cause poor teeth

Answer 35

D

Question 36

What’s the other name for vitamin D

Answer 36

Calciferol

Question 37

What’s z other name for vitamin A

Answer 37

Retinol

Question 38

What’s the other name for vitamin E

Answer 38

Tocopherol

Question 39

What’s the other name of vitamin C

Answer 39

Ascorbic acid