Chapter 7 - Food ( 1 )

Question 1

Nutrition

Answer 1

The way in which organisms obtain and use food

Question 2

Nutrients

Answer 2

Chemical substances present in food

Question 3

Food supplies _____ for ______ and ______.

Answer 3

~materials and energy

~metabolism and continuity

Question 4

Food is necessary for:

Answer 4

1) Source of energy
2) Source of chemicals needed for metabolic reactions
3) Raw materials for growth of new cells and repair of existing cells, tissues, organs etc.

Question 5

Food is made up of:

Answer 5

~6 chemical elements
~5 salts
~3 trace elements

Question 6

What are the six chemical elements food is made up out of

Answer 6

CHONPS
~carbon
~hydrogen
~oxygen
~nitrogen
~phosphorus
~sulphur

Question 7

List the five salts food is made up of

Answer 7

Na, Mg, Cl, K, Ca
~sodium
~magnesium
~chlorine
~potassium
~calcium

Question 8

List the three trace elements that food is made up of

Answer 8

Fe,Cu,Zn
~Iron
~Copper
~Zinc

Question 9

Elements combine in different ratios to form different…

Answer 9

..food components

Question 10

What are the six food components

Answer 10

1) Water
2) Lipids
3) Vitamins
4) Proteins
5) Carbohydrates
6) Minerals

Question 11

Food components in order of percentage in the body…

Answer 11

Water, protein, lipids, carbohydrate, vitamins and minerals

Question 12

Bio molecules

Answer 12

Chemicals that are made inside a living thing

Question 13

Four biomolecules found in food….

Lettuce, Can’t, Protect, Vegans

Answer 13

Lipids, carbohydrates, proteins,vitamins,

Question 14

Carbohydrates contain the elements…

Answer 14

1) Carbon
2) Hydrogen
3) Oxygen

Question 15

The general formula for a carbohydrate

Answer 15

Cx(H2 O)y

Question 16

Three types of Carbohydrates…

Answer 16

1) Monosaccharides
2) Disaccharides
3) Polysaccharides

Question 17

The 5 Ss of Monosaccharides

Answer 17

1. Simple sugar molecules
2. Simple sugars
3. Soluble in water
4. Sweet
5. Smallest carbohydrate unit

Question 18

Examples of monosaccharides

Answer 18

~Glucose

~Fructose

Question 19

Monosaccharides are found in…

Answer 19

Fruit

Question 20

What are disaccharides?

Answer 20

~Two monosaccharide sugar units joined together-known as double sugar molecules

Question 21

2 Ss of disaccharides

Answer 21

~soluble in water

~sweet to taste

Question 22

Examples of disaccharides

Answer 22

~sucrose
~lactose
~maltose

Question 23

Disaccharides are found in

Answer 23

~table sugar

~milk

Question 24

Polysaccharides are….

Answer 24

Moany monosaccharide sugar molecules joined together

Question 25

Characteristics of polysaccharides..

Answer 25

~not soluble in water

~do not taste sweet

Question 26

Polysaccharides examples

Answer 26

~starch

~cellulose

Question 27

Polysaccharides are found in…

Answer 27

~pasta
~bread
~cereals

Question 28

Lipids are

Answer 28

A diverse group of substances which include
•fats
•oils
•steroids
•waxes

Question 29

Examples of lipids as steroids

Answer 29

• cholesterol

* some sex hormones

Question 30

Examples of lipids in the form of waxes

Answer 30

~cover insect’s bodies

~cover leaves

Question 31

Lipids are made up of…

Answer 31

~carbon
~hydrogen
~oxygen

Question 32

Lipids are made up of two main types of molecules

Answer 32

1) Fatty Acids

2) Glycerol

Question 33

Types main types of lipids

Answer 33

~Tryglicerides

~Phospholipids