Knowledge Organiser chapter 5 - Communicable disease Flashcards

1
Q

What is a communicable disease?

A

A disease caused by a pathogen

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2
Q

What is a pathogen?

A

A microorganism that causes an infectious disease

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3
Q

What types of microorganism can cause disease?

A

Virus, bacteria, fungi or protists

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4
Q

Define ‘health’

A

A state of physical and mental well-being

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5
Q

What factors can affect our health?

A

Diet, stress and life situations

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6
Q

What is a main cause of allergies?

A

Immune responses caused by a pathogen

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7
Q

How do bacteria make us ill?

A

They reproduce rapidly in our bodies and produce toxins (poisons) that damage tissue and make us feel ill

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8
Q

How do viruses make us ill?

A

The reproduce rapidly inside cells causing damage

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9
Q

What ways can viruses be spread?

A

Air (including droplet), contact and water

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10
Q

How can the spread of disease be prevented?

A

Simple hygiene, destroying vectors, isolation of infected individuals and vaccination

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11
Q

What type of pathogen causes measles?

A

Virus

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12
Q

What are the symptoms of measles?

A

Fever and rash, can be fatal in children

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13
Q

How is measles spread?

A

Air (droplet inhalation)

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14
Q

How is measles prevented?

A

Vaccination

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15
Q

What type of pathogen causes HIV/AIDS?

A

Virus

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16
Q

What are the symptoms of HIV/AIDS?

A

Flu like symptoms initially followed by damage to the immune system causing other illnesses

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17
Q

How is HIV/AIDS spread

A

Sexual contact or exchange of body fluids e.g. blood or sharing needles

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18
Q

How is HIV/AIDS treated?

A

Antiretroviral drugs

19
Q

What type of pathogen causes TMV?

A

Virus (affects plants)

20
Q

What are the symptoms of TMV?

A

Mosaic pattern of discolouration on the leaf which affects photosynthesis

21
Q

How is TMV spread?

A

Contact, including by vectors

22
Q

How is TMV treated?

A

Good hygiene and pest control

23
Q

What type of pathogen is salmonella?

A

Bacteria

24
Q

What are the symptoms of salmonella?

A

Fever, abdominal cramps, vomiting and diarrhoea

25
Q

How is salmonella spread?

A

In contaminated food

26
Q

How is salmonella prevented?

A

Good food hygiene

27
Q

What type of pathogen causes gonorrhoea?

A

Bacteria

28
Q

What are the symptoms of gonorrhoea?

A

A thick yellow or green discharge from the vagina or penis and pain when urinating

29
Q

How is gonorrhoea spread?

A

Sexual contact

30
Q

How is gonorrhoea controlled?

A

Treatment with antibiotics and the use of barrier contraception (e.g. condoms)

31
Q

What type of pathogen causes rose black spot?

A

Fungus

32
Q

What are the symptoms of rose black spot?

A

Purple or black spots on leaves which turn yellow and drop early, reducing photosynthesis

33
Q

How is rose black spot spread?

A

Air (wind) or water

34
Q

How is rose black spot controlled?

A

Using fungicides and/or removing and destroying affected leaves

35
Q

What type of pathogen causes malaria?

A

Protist

36
Q

What are the symptoms of malaria?

A

Recurring fever which can be fatal

37
Q

How is malaria spread?

A

By mosquito vectors (being bitten)

38
Q

How is malaria controlled?

A

Preventing mosquitos from breeding and avoiding being bitten/using insect nets and insect repellents

39
Q

How does the skin defend us from pathogens?

A

Acts as a barrier, produces antimicrobial chemicals and is covered with healthy microbes

40
Q

How does our nose defend us from pathogens?

A

Full of hairs and mucus to trap particles in the air that could have pathogens

41
Q

How does our trachea and bronchi defend us from pathogens?

A

Produces sticky mucous to trap particles in air, cilia waft mucus up so we can swallow it

42
Q

How do our stomachs defend us from pathogens?

A

Contains acid to kill pathogens in food and drink

43
Q

How do white blood cells defend against pathogens that enter our body?

A

Ingesting them (phagocytosis), producing antibodies or producing antitoxins