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Biology GCSE > B3 Infection And Response > Flashcards

B3 Infection And Response Flashcards

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1
Q

What are pathogens

A

Pathogens are microorganisms that enter tne body and cause disease.

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2
Q

Pathogens cause

A

Communicable diseases

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3
Q

Main type of pathogens

A

Bacteria
Viruses
Protists
Fungi

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4
Q

How can pathogens spread

A

Water
Air
Direct contact

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5
Q

How can pathogens spread by water -

A

Some pathogens can be picked up by drinking or bathing in dirty watern

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6
Q

How can pathogens spread by air -

A

Pathogens can be carried in the air and be breathed in.Some pathogens are carried in the air in droplets made when you cough or sneeze

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7
Q

Pathogens can be spread by direct contact -

A

Some pathogens can be picked up by touching surfaces they’re on

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8
Q

How can the spread of diseases be reduced

A

Being hygienic
Destroying vectors
Isolating infected individuals
Vaccination

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9
Q

Baceria reproduce

A

Rapidly inside your body

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10
Q

Bacteria can make you feel ill by producing

A

Toxins

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11
Q

Toxins damage your

A

Cells and tissues

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12
Q

Examples of bacterial diseases

A

Salmonella and gonorrhoea

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13
Q

Human body has features that stop pathogens getting inside

A

The skin
Nose hair
Snot
Stomach acids

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14
Q

How does the skin stop pathogens

A

The skin stops pathogens from getting inside you.It also releases substances that kill pathogens

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15
Q

How do nose hairs stop pathogens

A

They trap particles that contain pathogens

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16
Q

How does snot stop pathogens

A

The trachea and bronchi release mucus to trap pathogens

17
Q

How does stomach acid stop pathogens

A

The stomach makes hydrocholoric acid.This kills pathogens in the stomach.

18
Q

If pathogens make it into your body your

A

Immune system kicks in to destroy them

19
Q

Phagocytosis

A

White blood cells engulf pathogens and digest them

20
Q

Producing antibodies

A

When a white blood cell comes across a foreign antigen they will make antibodies.These antibodies make sure the pathogens can be found and destroyed by other white blood cells

21
Q

Producing anti toxins

A

These stop toxins produced by the invading bacteria from working

Biology GCSE (7 decks)

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