Exam style questions

Question 1

Define the term “balanced diet” (2 marks)

Answer 1

A balanced diet consists of 7 types of food (1 mark)

Carbohydrates, fats, minerals, vitamins, fibres, water and proteins.

Question 2

What temperature is used to grow micro-organisms safely in a school lab? (1 mark)

Answer 2

25 degrees

Question 3

What is the rate of chemical reactions in our cells called? (1 Mark)

Answer 3

Metabolic rate

Question 4

Suggest one factor which can change a persons metabolic rate (1 mark)

Answer 4

Inheritance

Question 5

What is the disease polio caused by? (1 mark)

Answer 5

A virus

Question 6

Why is it difficult to kill a virus? (2 marks)

Answer 6

Viruses live inside cells (1 mark)

It is hard to kill the virus without damaging your cell (1 mark)

Question 7

What does a vaccine stimulate white blood cells to make?

Answer 7

antibodies

Question 8

There have been no cases of polio for many years, but children are still being vaccinated against it. Suggest one reason for this.

Answer 8

In case the disease returns, the immune system has produced antibodies ready to fight it

Question 9

When is person malnourished?

Answer 9

When their diet is not balanced - this may lead to a person being overweight or underweight.

Question 10

Give the 4 steps to vaccination

Answer 10

1) Dead or inactive strain of pathogen injected
2) Stimulates white blood cells to produce antibodies that destroy the pathogens
3) Person is immune to future infections
4) On re-infection the body can respond by rapidly making the correct antibody