B1.1

Question 0

What are the 7 components of a healthy diet?

Answer 0

Carbohydrates 
Fats
Vitamins 
Minerals 
Proteins
Fibre
Water

Question 1

What is a healthy diet?

Answer 1

A healthy diet has the right balance of food types. Carbohydrates, fat and protein are used by the body to release energy and to build cells.

Question 2

What causes the increase of blood cholesterol levels?

Answer 2

Too much LDLs

Foods rich in saturated fat

Question 3

What can LDLs (bad cholesterol) lead to?

Answer 3

Heart disease

Question 4

Why do you need MDLs (good cholesterol)?

Answer 4

You need it for you cell membrane and to make vital substances

Question 5

Explain why eating too much makes you put on weight (mass)?

Answer 5

The food contains energy, and any excess energy in the body is stored as fat.

Question 6

What are pathogens?

Answer 6

Tiny microorganisms -usually bacteria or viruses

Question 7

What are the 3 ways white blood cells defend the body against pathogens?

Answer 7

1. They ingest them, digest and destroy them
2. They produce antibodies, destroy a particular pathogen
3. They produce antitoxins, counteract the toxins produced by pathogens

Question 8

Name some ways the body stops pathogens from getting into the body?

Answer 8

Skin
Mucus
Killed by stomach acid
Scabs

Question 9

What do antibiotics kill?

Answer 9

Infective bacteria in the body

Question 10

Why are viruses difficult to kill?

Answer 10

They reproduce inside the body cells, so any treatment could also damage body cells

Question 11

Do antibiotics have any effect on viruses?

Answer 11

No

Question 12

What 3 things are needed to grow microorganisms in a lab?

Answer 12

1. Nutrients (agar jelly)
2. Warmth and oxygen
3. Kept incubated at 25 degrees in school and 35 degrees in industry

Question 13

What is used to make a vaccine?

Answer 13

Dead or inactive forms of a pathogen