Drugs + NS Flashcards

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1
Q

When does evolution occur?

A

When natural selection happens again and again

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2
Q

What are chromosomes?

A

Long strands of genetic information in the nucleus of cells

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3
Q

Explain the meaning of the word ‘drug’

A

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

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4
Q

Give an example of one medical drug

A

Morphine

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5
Q

What is the effect of a painkiller?

A

Blocks some nerve impulses so we feel less pain

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6
Q

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

A

Stimulant

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7
Q

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

A

Depressants

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8
Q

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

A

Morphine
Caffeine
Alcohol

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9
Q

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

A

It makes people happier and is addictive

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10
Q

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

A

Short term: Short breathing, blurred vision, vomiting

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

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11
Q

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

A

Pathogen

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12
Q

When organisms of the same species breed they do what?

A

Fertile offspring

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13
Q

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

A

Hybrids

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14
Q

What is carbon monoxide?

A

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

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15
Q

What is cirrhosis of the liver?

A

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

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