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45 Cards in this Set
- Front
- Back
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A virus is a? |
Micro organism |
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Are viruses alive? |
No |
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Size of viruses |
Smallest pathogen |
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Structure of a virus |
Strand of genetic material (DNA and RNA) + inner and outer protein coat |
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How do viral diseases work |
They infect a single cell in a host Use single cell to copy their genetic material and protein coats Cells split open, release new infecting particles to repeat cycles Called strains |
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Measles are what type of disease? |
Viral disease |
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Measles are normally transmitted between Who? |
Young children (highly infectious) |
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How measles spreads |
Airborne transmission (tiny droplets when someone sneezes) |
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Symptoms of measles |
Fever Red skin rash |
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Complications of measles |
Sterility in adults Foetal abnormalities |
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HIV/AID's is what type of disease |
Viral |
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What does HIV stand for |
Human Immunodeficiency Virus |
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How is HIV/AIDs transmitted |
Transmitted when body fluids are shared, during sex, shared use of needles and mother to child |
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Immediate symptoms of HIV |
Flu-like illnesses Usually no other symptoms |
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Year later symptoms of HIV |
Attacks body immune cells and they are less able to fight off cancer or infections |
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What is this stage called? |
AIDs |
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What does AIDs stand for |
Acquired Immune Deficiency Syndrome |
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Cure of HIV |
No cure Antivetroviral drugs (slow development of disease) |
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Bacterial diseases are called |
Pathogenic bacteria |
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Structure of bacteria |
Prokaryotes |
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How do bacterial diseases spread |
Live inside hosts (mouth, nose and throats) Reproduce asexually (binary fission - clones) Produce toxins as they grow |
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Are bacteria alive |
Yes |
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Salmonella is what type of disease |
Bacterial disease |
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Who does salmonella affect? |
Cold and warm blooded animals |
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Symptoms of salmonella |
Fever Cramps Vomiting Diarrhoea |
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How is salmonella spread |
In unhygienic conditions |
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Gonorrhea is? |
An STD and a bacterial disease |
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Symptoms of gonorrhea |
Painful burning sensation when urinating Production of thick yellow/green fluid |
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Treatment of gonorrhea |
Penicillin (antibiotics) |
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Prevention of gonorrhea |
Condoms that stop transmition |
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Structure of Fungal Disease |
Eukaryotic Walls made from chitin instead of cellulose |
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Appearance of fungal diseases |
Single celled yeast fungus Multicellular mushrooms |
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What is chitin? |
A polymer made from sugars that forms the cell walls of fungi and the exoskeleton of insects |
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Fungal disease reproduction |
Produce spores for reproduction Rather than pollen and ova |
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Athletes foot is what disease |
Fungal disease |
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Symptoms of athletes foot |
Itching Flaking Blistering |
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Ideal condition for athletes foot |
Warm and moist feet |
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Treatment of athletes foot |
Keep feet dry Antifungal cream or spray |
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Ringworm is what type of disease |
Fungal |
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Ringworm |
Produce ring like red rash |
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Protist Disease structure |
Eukaryotic micro organisms Lave group of dissimilar organism Always unicellular or multicellular Without tissues |
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Malaria is what type of disease? |
Protist - caused by 5 different species of Plasmodium protists |
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Symptoms of malaria |
Fever Tiredness Vomiting Headaches |
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Transmission of Malaria |
From one individual to another by the vector (mosquitos) Mosquitos bite and suck blood, plasmodium infected organisms Then pass pathogen from their saliva to blood of other organisms when they bite Pathogens travel to the hosts liver and reproduce |
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Prevention of malaria |
Dont get bitten - mosquitos nets and insect repellent Drugs (malarone) - prevent transmission and kill pathogen No vaccination Remove stagnant water - mosquitos lay eggs |
