Chapter 2: The Chemicals Of Life

Question 1

Biomolecules

Answer 1

Organelles and cells are made from biomolecules

Question 2

The four biomolecules that every organism needs are:

Answer 2

1. Carbohydrates
2. Proteins
3. Fats
4. Vitamins

Question 3

Diet factors

Answer 3

Age
Gender
Genetics
Health
Physical activity

Question 4

A balanced diet

Answer 4

Provides carbohydrates, proteins, fats, vitamins, minerals, fibre and water in the correct quantities.

Question 5

What is the measurement for the amount of energy in food

Answer 5

Kilocalories

Kilojoules

Question 6

Reference Intake (RI)

Answer 6

RIs provide information about the amount of calories (energy), fat, sugars and salt needed for a healthy diet.

Question 7

The food pyramid

Answer 7

You eat most servings of food from the bottom of the pyramid and eat small quanitites of the foods from the top of the pyramid.

Question 8

Body Mass Index (BMI)

Answer 8

Mass divided by height to the power of two

Question 9

Malnutrition

Answer 9

Is a diet that is not balanced

Question 10

Disease

Answer 10

A disease is a condition that affects an organism’s ability to work normally.

Question 11

Deficieny disease

Answer 11

Diseases caused by a lack of a particular nutrients are called Deificiency disease.

Question 12

Obesity

Answer 12

If you consume more energy than your body needs

Question 13

How to stay healthy

Answer 13

Exercise
Regular periods
Drinking lots of water
Limiting alcohol
Avoiding cigarettes and recreational drugs