Drugs + NS

Question 1

When does evolution occur?

Answer 1

When natural selection happens again and again

Question 2

What are chromosomes?

Answer 2

Long strands of genetic information in the nucleus of cells

Question 3

Explain the meaning of the word ‘drug’

Answer 3

Any chemical substance that changes the way in which the body works

Question 4

Give an example of one medical drug

Answer 4

Morphine

Question 5

What is the effect of a painkiller?

Answer 5

Blocks some nerve impulses so we feel less pain

Question 6

Name the type of the drug which has the effect of increasing speed of reactions

Answer 6

Stimulant

Question 7

Name the type of drug which has the effect slows down the activity of neurones in the brain

Answer 7

Depressants

Question 8

Give an example for each of these three types of drugs:
Painkiller
Stimulant
Depressants

Answer 8

Morphine
Caffeine
Alcohol

Question 9

Name one reason why Alcohol is such a popular drug (1)

Answer 9

It makes people happier and is addictive

Question 10

Describe the short term and long term effects of alcohol (6)

Answer 10

Short term: Short breathing, blurred vision, vomiting

Long term: Brain damage, cirrhosis of the liver, blood clots in brain

Question 11

What is the correct term for any organism that causes a disease?

Answer 11

Pathogen

Question 12

When organisms of the same species breed they do what?

Answer 12

Fertile offspring

Question 13

When organisms or different species breed they can produce fertile offspring called

Answer 13

Hybrids

Question 14

What is carbon monoxide?

Answer 14

A gas that is poisonous because it reduces the amount of oxygen that red blood cells can carry.

Question 15

What is cirrhosis of the liver?

Answer 15

Where the normal tissue is destroyed so the liver cannot function properly. This can lead to death