Ch 2- The Chemicals Of Life

Question 1

Biomolecules

Answer 1

What organelles and cells are made up of

Question 2

Plants make biomolecules from

Answer 2

Raw materials

Question 3

Animals get biomolecules from

Answer 3

The foods they eat

Question 4

What four biomolecules do organisms need

Answer 4

Protein, carbs, fats and vitamins

Question 5

Carbs

Answer 5

Starch- slow supply of energy eg potatoes
Sugar- fast supply of energy eg sweets
Fibre- prevents constipation eg brown bread

Question 6

Protein

Answer 6

Growth and repair of cells, makes muscle and enzymes eg meat and fish

Question 7

Fats

Answer 7

Provides energy, insulates and protects delicate organs eg meat, dairy

Question 8

Vitamins

Answer 8

Healthy gums, teeth, joints and immune system eg fruit and diary

Question 9

Carbs= starch : iodine

Answer 9

Orange brown to blue black

Question 10

Glucose:Benedict

Answer 10

Blue to brick red

Question 11

Protein= bieuret reagent

Answer 11

Blue to purple

Question 12

Fats= brown paper

Answer 12

Opaque to translucent

Question 13

Minerals

Answer 13

Build biomolecules and assists chemical reactions within cells eg lean meat , fresh fruit

Question 14

Water

Answer 14

Acts as a solvent, transports materials in blood and removes waste eg water, fruit and veg

Question 15

Factors that influence diet

Answer 15

Age, gender, genetics and physical activity

Question 16

Balanced diet

Answer 16

Provides all nutrients in the correct quantities

Question 17

1g=

Answer 17

1/1000 of a kg

Question 18

RI

Answer 18

Provides info about the amount of calories, fat and sugar is needed for a healthy diet

Question 19

Food pyramid

Answer 19

Promotes healthy living and helps plan a balanced diet

Question 20

Body mass index

Answer 20

Provides people with quantitive info about their weight

Question 21

BMI formula

Answer 21

Mass/ height squared

Question 22

Malnutrition

Answer 22

An unbalanced diet

Question 23

Disease

Answer 23

Condition that affects an organisms ability to work normally

Question 24

Deficiency disease

Answer 24

Caused by lack of a nutrition

Question 25

Obesity

Answer 25

Cause by consuming too many calories and not getting enough exercise. Symptoms are weight gain, difficult to move . Makes underlying health problems worse

Question 26

High blood pressure

Answer 26

Causes by too much sat fat in the diet and too much salt. Symptoms are increases heart rate and risk of heart disease and stroke

Question 27

Type 2 diabetes

Answer 27

Causes by too much sugar and fat in the diet. Shortens life expectancy, may result in kidney failure and heart disease

Question 28

Osteoporosis

Answer 28

Caused by not enough calcium and Vit D in the diet. More likely to suffer bone fractures

Question 29

Anaemia

Answer 29

Caused by not enough iron. Tiredness, paleness. Red blood cells can’t carry oxygen

Question 30

To keep healthy:

Answer 30

Exercise, regular periods of rest and drink water. Avoid cigarettes and alcohol