Science Revision 2

Question 1

What are the 7 food groups

Answer 1

Carbohydrates, lipids/fats, proteins, minerals, vitamins, water, fibre

Question 2

What are carbohydrates

Answer 2

Pasta, bread, rice, potatoes (they are the main source of energy)

Question 3

What are lipids (aka fats)

Answer 3

Oil, butter, margarine (give you energy)

Question 4

What are proteins

Answer 4

Meat, fish, eggs, milk (help with growth and rebuild cells)

Question 5

What are vitamins

Answer 5

Fruit, veg, cheese (keep the body healthy and keep it working and concentration)

Question 6

What are minerals

Answer 6

Whole grain, fresh fruit, veg (help body to work and decision making)

Question 7

What is water

Answer 7

Water (keeps you hydrated) 70% of our cells are water

Question 8

What is fibre

Answer 8

Beans, brown rice, fruit (helps to keep things moving through the gut)

Question 9

How do you test for starch

Answer 9

Add a few drops of iodine, if it turns blue-black it contains starch

Question 10

How do you test for lipids

Answer 10

Add a few drops of Ethanol, shake it leave for 1 min, if its cloudy the food has lipids

Question 11

How do you test for sugar

Answer 11

Add a few drops of benedicts, heat it in hot water bath, if it turns orange - red it has sugar

Question 12

How do you test for protein

Answer 12

Add a few drops of copper and sodium hyrdoxide solution, if it turns purple it has protein

Question 13

What is a balanced diet

Answer 13

Its when you have the right proportions of the food groups to keep you healthy

Question 14

What happens if your diet is unbalanced

Answer 14

1. Be underweight
2. Be overweight
3. Vitamin and mineral deficient

Question 15

To be underweight increases the risk of what

Answer 15

Poor immune system, lack of energy, lack of vitamins and minerals

Question 16

To be overweight increases the risk of what

Answer 16

Heart disease, strokes, diabetes, some cancers

Question 17

What does it mean to be Vitamin and Mineral deficient

Answer 17

To be deficient in vitamin A can lead to night blindness, to be deficient in Vitamin D can lead to rickets

Question 18

What are Enzymes

Answer 18

Enzymes are special proteins that can break large molocules of nutrients into small molocules

Question 19

Enzymes are known as what

Answer 19

As biological catalysts (they speed up digestion without being used up)

Question 20

What are the three main types of enzymes in digestion

Answer 20

Carbohydrase (sugars), protease, lipids

Question 21

What are drugs

Answer 21

Chemicals that effect the way your brain and body work.

There are two types of drugs medical and recreational

Question 22

What do you know about medical drugs

Answer 22

They are used to cure illnesses, some have side effects, examples: pain killers, antibiotics, cough mixture

Question 23

What do you know about recreational drugs

Answer 23

Many are illegal and can be harmful, taken for enjoyment or to relax or stay awake, normally they have no health benefits, examples: alcanol, cannabis, heroine

Question 24

Drinking larges amount of alcahol over a long time can cause what

Answer 24

Heart disease, stomach ulcers, brain damage, liver disease

Question 25

Drinking during pregnancy increases the risk of

Answer 25

Miscariage, premature birth, low birth weight babies, still birth

Question 26

What are the three harmful chemicals in cigarette

Answer 26

Tar (clogs the lungs and alvioli),

Nicoten (makes people addicted)

Carbon monoxide (stops blood from carrying oxygen

Question 27

What diseases can smoking cause

Answer 27

Heart disease, lung cancer, strokes, respiratory infections

Question 28

What is addiction

Answer 28

When your body becomes used to a chemical and you need to take the drug to feel normal, when they try to stop taking the drug their body reacts by feeling sick and have other symptons, these symptons are called withdrawal symptons

Question 29

What happens in the small and large intestine

Answer 29

Small intestine - digestive juices from the liver and pancreas are added and digestion is completed, the nutrients pass into the blood stream

Large intestine - water passes back into the body leading a solid waste called feces (poo)