Food and Health

Question 1

what is the role of carbohydrates in maintaining healthy bodies

Answer 1

Carbohydrates contain glucose that gives us energy.

Question 2

what is the role of lipids in maintaining healthy bodies

Answer 2

They helpthe body store energy in the form of fat.

Question 3

what is the role of proteins in maintaining healthy bodies

Answer 3

They are made up of amino acids which build and repair muscles and bones.

Question 4

what is the role of vitamins in maintaining healthy bodies

Answer 4

They help your body fight infection.

Question 5

what is the role of minerals in maintaining healthy bodies

Answer 5

Keep your bones, muscles, heart and brain working properly.

Question 6

what is the role of dietary fibre in maintaining healthy bodies

Answer 6

Fibre keeps your digestive system healthy.

Question 7

what is the role of water in maintaining healthy bodies

Answer 7

If our organs (mainly our brain) don’t get liquid, then the start to shut down

Question 8

what are some consequences of imbalances in a diet for healthy
living

Answer 8

weight gain/loss
become unhealthy

Question 9

Define a Drug

Answer 9

A drug is any chemical that alters the activities of the body.

Question 10

Define a depressant and a stimulant and give examples
of both.

Answer 10

Depressent - a drug reducing functional or nervous activity (Alcohol, Benzodiazepines, GHB, Kava)

Stimulant - a substance that raises levels of physiological or nervous activity in the body (caffeine, nicotine, amphetamines and cocaine)

Question 11

List the negative impacts of smoking on the body from
Nicotine, Tar, and Carbon monoxide.

Answer 11

Nicotine An addictive drug that narrows blood vessels and can lead to a heart attack.
Tar A black sticky chemical that can cause cancer.
Carbon monoxide A toxic gas that prevents red blood cells from carrying oxygen.

Question 12

The importance of a balanced diet and regular exercise
for a healthy life style.

Answer 12

It’s important to eat a varied and balanced diet to stay healthy. You need to drink plenty of water and eat at least five portions of fruit and vegetables every day. You also need to make sure you exercise regularly to keep your heart, lungs and muscles strong and healthy.

Question 13

how to test for starch

Answer 13

crush the food into small pieces
add iodine
it will turn blue/black

Question 14

how to test for sugar

Answer 14

crush
add water
add Benedicts Solution
it will turn orange/red

Question 15

how to test for lipids

Answer 15

mix with 95% ethanol
add same volume of distilled water
a milky emulsion forms at the top

Question 16

how to test for protein

Answer 16

crush
add water
add same volume of Biuret Reagent
it will turn purple