Food

Question 1

what is a Polysaccharide

Answer 1

many sugar units joined together

Question 2

what is a Disaccharide

Answer 2

two sugar units joined together

Question 3

what is a monosaccharide

Answer 3

a single sugar unit

Question 4

what is a TRIGLYCERIDE made up of

Answer 4

three fatty acids and one glycerol

Question 5

name of structural polysaccharides found in plants

Answer 5

Cellulose / starch

Question 6

name of polysaccharide found in animals

Answer 6

glycogen

Question 7

function/role of Lipid in body

Answer 7

Insulation to body/prevent heat loss

Question 8

chemicals used to test for protein

Answer 8

sodium hydroxide solution / copper sulfate solution

Question 9

result for the test of protein

Answer 9

Buiret solution turns violet

Question 10

chemical used to test for glucose / reducing sugar

Answer 10

Benedicts solution

Question 11

result for the test for glucose / reducing sugar

Answer 11

the Benedicts solution will turn from blue to brick red

Question 12

chemical used to test for starch

Answer 12

Iodine solution

Question 13

result for the test of starch

Answer 13

iodine solution turns red to blue/black

Question 14

name a fibrous structure of protein and where it is found in the body

Answer 14

keratin and found in hair and skin

Question 15

minerals found in plants and functions

Answer 15

calcium and magnesium
calcium- forms middle lamella
magnesium- forms chlorophyll

Question 16

minerals found in animals and functions

Answer 16

calcium and iron
calcium- strong bones and teeth
iron- forms haemoglobin

Question 17

functions of water in the body

Answer 17

excellent solvent / keeps body temperature constant/ medium in chemical reaction

Question 18

Six main elements of food (LETTERS)

Answer 18

( C ) ( H ) ( O ) ( N ) ( P ) ( S )

Question 19

structural role of proteins

metabolic role of proteins

Answer 19

enzymes

muscle/hair growth and repair

Question 20

Components of lipids

Answer 20

fatty acids and glycerol

Question 21

Cx(H2O)y. what is the value of y

Answer 21

6

Question 22

carbohydrate found in. DNA

Answer 22

deoxyribose

Question 23

how does a fat differ from a phospholipid

Answer 23

fat has 3 fatty acids phospholipid have 2 fatty acids

Question 24

water soluble Vitamins and deficiencies

Answer 24

Vitamin C / B and scurvy

Question 25

Fat Soluble Vitamins and deficiencies

Answer 25

Vitamin A / D and Rickets

Question 26

functions of minerals

Answer 26

formation of soft tissues and of rigid structure

Question 27

how does starch and glucose differ

Answer 27

``` starch = polysaccharide / glucose= monosaccharide ```

Question 28

what are amino acids

Answer 28

the smallest unit of protein/ chain of many make proteins

Question 29

how does the buiret test and Benedicts (Fehlings) differ

Answer 29

buiret test = test for protein / | benedicts test = test for reducing sugar

Question 30

what are fats and oils

Answer 30

both lipids fats are solid at room temperature oils are solid at room temperature

Question 31

name of a monosaccharide disaccharide polysaccharide

Answer 31

glucose lactose/maltose starch

Question 32

formula of monosaccharide

Answer 32

(C6 H12 O6)

Question 33

what is a trace element

Answer 33

its a small amount needed

Question 34

examples of trace elements

Answer 34

copper / zinc / iron

Question 35

two types of metabolic reactions and examples

Answer 35

(CRAP) catabolic reaction - respiration Anabolic reaction - photosynthesis