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Edexcel GCSE Biology > Topic 5- Health, Disease and the Development of Medicines > Flashcards

Topic 5- Health, Disease and the Development of Medicines Flashcards

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1
Q

Which cell structure is found in plant and animal cells but not in bacterial cells?

A

nucleus

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2
Q

Give one example of a disease that can be caught from another person.

A

any communicable/infectious disease, e.g. flu or a cold

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3
Q

Give an example of a disease that is not passed from person to person.

A

any non-communicable disease, e.g. cancer, diabetes

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4
Q

Name a type of organism that can cause disease.

A

any one from: bacterium, virus, protist, fungus

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5
Q

Suggest one way in which infectious diseases are spread.

A

any suitable method, e.g. by sneezing, in air, in water, by touching faeces

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6
Q

What might a doctor give to someone who has a bacterial disease?

A

antibiotic

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7
Q

Give one symptom of flu.

A

any one from: high temperature/fever, aches, runny nose, sore throat

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8
Q

What does the immune system do?

A

protect against infection

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9
Q

Which term describes bacteria that are not harmed by an antibiotic?

A

antibiotic resistant

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10
Q

Describe one thing you can do to stay healthy.

A

any suitable answer such as: avoid infection, get regular exercise, eat a good diet, avoid stress

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11
Q

Is alcoholic liver cirrhosis a communicable or non-communicable disease?

A

non-communicable

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12
Q

Which type of disease is passed from parent to offspring in their genes?

A

genetic disease

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13
Q

What causes malnutrition?

A

a poor diet/diet without the right balance of nutrients

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14
Q

What causes a deficiency disease?

A

not getting enough of a nutrient from food

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15
Q

Give one example of a deficiency disease.

A

any suitable answer such as anaemia, kwashiorkor, scurvy

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16
Q

Give an example of a lifestyle factor that is linked to disease.

A

any suitable answer such as diet, exercise, smoking, alcohol consumption

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17
Q

If the amount of alcohol a person drinks increases, how will their risk of liver disease change?

A

increase

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18
Q

What is the function of the liver that makes it particularly likely to be damaged by alcohol?

A

It breaks down toxic substances including alcohol.

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19
Q

Describe one problem that alcohol consumption causes for society.

A

any suitable answer such as cost of treating people with liver disease, loss of working days, increased risk of deaths by drink driving

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20
Q

What is cardiovascular disease?

A

disease of the heart and/or circulatory system

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21
Q

Is cardiovascular disease communicable or non-communicable?

A

non-communicable

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22
Q

Name two ways of measuring obesity.

A

BMI and waist : hip ratio

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23
Q

How does diet affect obesity?

A

Eating too much increases mass/obesity.

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24
Q

How does exercise affect obesity?

A

More exercise can decrease obesity.

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25
Q

How is obesity correlated with cardiovascular disease?

A

Increasing obesity increases the risk of disease.

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26
Q

How is smoking tobacco correlated with cardiovascular disease?

A

The more a person smokes, the greater the person’s risk of cardiovascular disease.

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27
Q

Name two different types of treatment for cardiovascular disease.

A

any two from: bypass surgery or stent as to prevent blood clots or reduce blood pressure; lifestyle changes smoking, increasing exercise or changing diet

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28
Q

What is a pathogen?

A

a microorganism that causes disease in/harms the body

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29
Q

Are diseases caused by pathogens communicable or non-communicable?

A

communicable

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30
Q

Which type of pathogen is HIV?

A

virus

31
Q

Which type of pathogen causes malaria?

A

protist

32
Q

Which species is affected by cholera dieback?

A

ash trees

33
Q

Which type of pathogen causes cholera?

A

bacterium

34
Q

Which organ does tuberculosis damage?

A

lungs

35
Q

Which pathogen causes haemorrhagic fever?

A

Ebola virus

36
Q

What are the symptoms of malaria?

A

damage to blood and liver, fever

37
Q

What are the symptoms of infection by Helicobacter?

A

stomach ulcers

38
Q

How can the spread of cholera dieback be reduced or prevented?

A

by destroying infected wood

39
Q

Why does killing mosquitoes help prevent malaria?

A

It stops the malaria pathogen being spread.

40
Q

Which type of pathogen can cause stomach ulcers?

A

bacterium, Helicobacter

41
Q

Which type of pathogen causes Ebola?

A

virus

42
Q

How is Ebola spread?

A

contact with infected body fluids

43
Q

How can the spread of cholera be reduced or prevented?

A

avoid drinking infected water/boil or treat water to kill the cholera pathogen

44
Q

How could the spread of tuberculosis be reduced or prevented?

A

by isolating infected people

45
Q

Which term is used for organisms that spread disease from one host to another?

A

vector

46
Q

Which organism carries the pathogen that causes malaria from one host to another?

A

mosquito

47
Q

How does the malarial pathogen get into its host?

A

mosquito sucks human blood

48
Q

Name one part of a bacterium that is not found in virus particles.

A

cell surface membrane/nucleus/cytoplasm, etc.

49
Q

How do viruses replicate?

A

take over replication processes in cells

50
Q

Name one symptom of disease that the medicine aspirin is used to relieve.

A

any one suitable, e.g. reduce fever, soothe aches, painkiller

51
Q

Which barrier to infection covers the body?

A

skin

52
Q

Why does that barrier protect against infection?

A

thick/difficult for pathogens to get through

53
Q

How are trapped pathogens moved out of the lungs?

A

movement of cilia

54
Q

How does the chemical defence in the stomach help to protect against infection?

A

It is highly acidic, which kills many pathogens.

55
Q

Which chemical defence against infection is found in tears and saliva?

A

lysozyme

56
Q

How does this chemical defence protect against infection?

A

The enzyme breaks down bacterial cell walls.

57
Q

How are Chlamydia and HIV transmitted?

A

sexually transmitted infections/STIs

58
Q

Explain one way that the spread of Chlamydia or HIV could be reduced or prevented.

A

any answer that indicates prevention of contact with sexual fluids, or infected breast milk to a baby

59
Q

Which type of blood cell is important in the immune response?

A

white blood cell/lymphocyte

60
Q

What name is given to the molecules on pathogens that the immune system responds to?

A

antigen

61
Q

Which cells are left in the blood after an infection has been cleared?

A

memory lymphocytes

62
Q

What is the function of the cells left in the blood after infection?

A

to protect against further infection by the same pathogen

63
Q

Does immunity to one pathogen make you immune to other pathogens?

A

no [usually]

64
Q

Give two ways that a secondary response differs from a primary response to an infection.

A

faster and much larger production of antibodies

65
Q

Which name is given to the inactive form of a pathogen used in immunisation?

A

vaccine

66
Q

Why are people immunised against diseases?

A

to stop them being ill if they are infected with particular pathogens

67
Q

Which medicines are used to treat infections caused by bacteria?

A

antibiotics

68
Q

When possible new medicines are being developed, what are they tested on in the first stage of testing?

A

cell/tissue cultures

69
Q

Why can antibiotics help to cure bacterial infections?

A

they kill bacteria/inhibit bacterial growth

70
Q

Why don’t antibiotics have the same effect on human cells as they have on bacteria?

A

different structure/processes

71
Q

Why can antibiotics not be used against viral infections?

A

viruses have no cell processes

72
Q

Name one type of white blood cell that attacks bacteria.

A

lymphocyte/phagocyte

73
Q

Given one reason why new medicines are first tested on cell or tissue cultures.

A

any one from: to make sure they are safe/get into cells/help diseased cells get better

74
Q

Which type of organism are the clinical stages of testing carried out on?

A

humans/people

Edexcel GCSE Biology (7 decks)

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