Communicable diseases Flashcards

1
Q

Compare bacterial and viral diseases:

A
  • bacteria divides rapidly by splitting in two snd produces toxins which affect our body and make us feel ill
  • viruses live and reproduce inside cells, damaging and destroying them
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2
Q

Explain how HIV leads to AIDS:

A

HIV attacks the immune system until it can no longer treat infections and cancer
AIDS is known as the late-stage HIV infection

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3
Q

Explain how plants are affected through direct contact?

A

infected plant material can infect an entire crop

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4
Q

Describe how vectors spread disease?

A

vectors transfer disease between infected and uninfected organisms

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5
Q

How can disease be spread through water?

A

drinking water containing sewage

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6
Q

Describe how lifestyle conditions increase the likelihood of disease spreading?

A

crowded conditions with no sewage system spread diseases more quickly

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7
Q

How can we prevent the spread of communicable diseases?

A
  • washing hands after going to the toilet
  • disinfectant in kitchen work surfaces
  • keeping raw food away
  • coughing or sneezing into a handkerchief
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8
Q

What are communicable disease?

A

transmission of disease from one organism to another

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9
Q

what are the symptoms of measles?

A

red skin rash and fever

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10
Q

How is measles spread?

A

inhalation of droplets

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11
Q

How is measles prevented in the UK?

A

improved living conditions and a vaccination programme for young children

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12
Q

Symptoms of HIV/AIDS:

A

mild flu-like illness

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13
Q

How is HIV/AIDS spread?

A

exchange of bodily fluids or direct sexual contact

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14
Q

How to treat HIV/AIDS?

A

antiretroviral drugs

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15
Q

Symptom of TMV?

A

mosaic pattern of discolouration on the leaves

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16
Q

How does TMV affect plants?

A

affected areas do not photosynthesise so affects yield of a crop

17
Q

How to prevent TMV?

A

TMV reistant strains
good field hygiene
good pest control

18
Q

What do antibiotics do?

A

kill bacteria and stop them from growing

19
Q

What is salmonella found in?

A

raw meat, egg, poultry

20
Q

What causes salmonella?

A

eating undercooked food and eating food prepared in unhygienic conditions

21
Q

Symptoms of salmonella:

A

abdominal cramps, vomiting, diarrhoea

22
Q

Why do doctors not prescribe antibiotics for salmonella?

A

symptoms do not last very long

23
Q

How to prevent food poisoning.

A
  • keep raw chicken away
  • avoid washing raw chicken
  • wash hands and surfaces well
  • cook chicken thoroughly
24
Q

What causes gonorrhoea?

A
  • unprotected sexual contact with an infected person
25
Q

Symptoms of gonorrhoea?

A

thick, yellow discharge/ green discharge and pain on urination

26
Q

How is gonorrhoea treated?

A

antibiotics

27
Q

Why is it gonorrhoea difficult to treat?

A

Antibiotic - resistant strains have evolved

28
Q

How to prevent spread of gonorrhoea?

A

contraception, reducing number of sexual partners

29
Q

How does black rose spot affect plants?

A

reduces leaves available for photosynthesis

30
Q

How to prevent the spread of black rose spot?

A
  • removing and burning affected leaves and stems
  • Chemical fungicides
31
Q

Symptoms of malaria?

A

fever, sweat, chills, headaches, vomiting diarrhoea

32
Q

How to prevent spread of malaria?

A
  • insecticide- impregnated nets
  • Insecticides to kill mosquitoes
  • Antimalarial drugs that kill parasites
  • Prevent mosquitoes from breeding
33
Q

How is malaria passed from one person to another?

A

mosquitoes suck blood containing protists from an infected person and pass the protist to other people they suck blood from