Biology- B5: Communicable Diseases
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32 Terms
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Communicable Disease
\-Contagious
\-Caused by pathogen
\-Caused by pathogen
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Non-Communicable disease
\-Non-contagious
\-Caused by environmental factors
\-Caused by environmental factors
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Pathogen
Microorganism that causes disease
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Examples of microorganism
\-Virus
\-Bacteria
\-Fungi6
\-Bacteria
\-Fungi6
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Examples of bacteria
\-Cholera
\-Salmonella
\-Sepsis
\-Salmonella
\-Sepsis
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How does bacteria cause disease?
Toxins make you feel ill
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Examples of a virus
\-Coronavirus
\-Flu
\-Herpes
\-Flu
\-Herpes
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How does a virus cause disease?
\-Invade normal cells then multiply the infected cells
\-Damaging/killing your normal cells
\-Damaging/killing your normal cells
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Examples of fungi
\-Athletes foot
\-Thrush
\-Ringworm
\-Thrush
\-Ringworm
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How do fungi cause disease?
Replication of fungus invading tissue/disrupting function
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What did Inges Semmelweis discover?
Doctors needed to wash their hands
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How did Inges Semmelweis make his discovery?
\-2 Labor wards (one run by doctors, other nurses)
\-Doctors went too and from the morgue
\-Nurses ward had better mortality-rate
\-Doctors went too and from the morgue
\-Nurses ward had better mortality-rate
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What are the symptoms of HIV?
\-Flu-like
\-Weakened immune system
\-Weakened immune system
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How does HIV spread?
\-Sex
\-Bodily fluid exchange
\-Bodily fluid exchange
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What is the treatment for HIV?
No treatment, antiretroviral drugs
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What are the symptoms of TMV
\-Mosaic pattern of discolouration on leaves
\-Destroys cells
\-Destroys cells
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How does TMV spread?
Contact between diseased and healthy plant
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What is the treatment for TMV?
No treatment/ cut off diseased parts
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What are the symptoms of measles?
\-Fever
\-Red skin rash
\-Red skin rash
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How does measles spread?
\-Inhalation of droplets from coughs and sneezes
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What is the treatment for measles?
No treatment but vaccination available
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How does rose black spot affect the plant?
\-Reduces chlorophyll (photosynthesis)
\-Reduces growth
\-Reduces growth
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How is rose black spot treated?
\-Creams
\-Cut off infected leaves
\-Cut off infected leaves
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What causes malaria?
Protist (plasmodium)
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How is malaria spread?
\-Mosquito becomes infected after biting an infected person,
\-Infected mosquito then bites an uninfected person
\-Infected mosquito then bites an uninfected person
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Vector
Organism that transmits disease from one animal or plant to another
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Symptoms of malaria
\-Anaemia
\-Destroys red blood cells
\-Flu
\-Death
\-Destroys red blood cells
\-Flu
\-Death
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How can you prevent malaria?
Insect repellent
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How do wbc kill disease?
\-Engulf pathogen
\-Antibodies stick to antigens
\-Antitoxins stick to toxins
\-Antibodies stick to antigens
\-Antitoxins stick to toxins
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Why do communicable diseases spread faster after a natural disaster?
\-Large amount of people in close proximity
\-Destruction of water/sanitation systems
\-Exposure to contaminated surface water/floodwater
\-Destruction of water/sanitation systems
\-Exposure to contaminated surface water/floodwater
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Similarities between salmonella and gonorrhoea
\-Bacterial diseases
\-Common
\-Common
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Differences between salmonella and gonorrhoea
\-Gonorrhoea is an std
\-Salmonella is food poisoning
\-Gonorrhoea: discharge
\-Salmonella: vomiting/diarrhea
\-Salmonella is food poisoning
\-Gonorrhoea: discharge
\-Salmonella: vomiting/diarrhea