Download - Aqa b1a 11.4_disease_pics_rg[1]
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Diseases
How they affect us
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Disease are acquired by:• Genetic causes – inherited from parents
• Microbial – infection from a virus, bacteria or fungus
• Parasitic - catch an organism that causes disease condition –
e.g. malaria – protozoa, thread worm crab lice
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Disease pathogens - microbes
• Bacteria and viruses are the most common of disease pathogens
• Bacteria can survive outside of the host
organism• Viruses can only survive and reproduce within
a host cell
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Bacteria
This is a pin prick with bacteria growing on it
These are rod shaped bacteria
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Structure of bacteria
Bacteria produce toxins – poisons –that make us feel ill
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Viruses – these are much smaller
Virus invade body cells and then hijack the cells DNA to reproduce – massive cell damge can be caused
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• Chicken pox
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Shingles
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shingles
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Rubella
or
German measles
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Mumps
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Athletes foot
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Cold sore
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Herpes
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Small pox – a killer
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Polio
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Warts
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Verruca
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verruca
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Ulcers
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Ulcer
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A few diseases – wikipedia linked
• Viral infectious diseases• AIDS – AIDS Related Complex – Chickenpox (Varicella) – Common cold –
Cytomegalovirus Infection – Colorado tick fever – Dengue fever – Ebola haemorrhagic fever – Epidemic parotitis – Hand, foot and mouth disease – Hepatitis – Herpes simplex – Herpes zoster – HPV – Influenza (Flu) – Lassa fever – Measles – Marburg haemorrhagic fever – Infectious mononucleosis – Mumps – Poliomyelitis – Progressive multifocal leukencephalopathy – Rabies – Rubella – SARS – Smallpox (Variola) – Viral encephalitis – Viral gastroenteritis – Viral meningitis – Viral pneumonia – West Nile disease – Yellow fever
• [edit]• Bacterial infectious diseases• Anthrax – Bacterial Meningitis – Brucellosis – Campylobacteriosis –
Cat Scratch Disease – Cholera – Diphtheria – Epidemic Typhus – Gonorrhea – Impetigo– Legionellosis – Leprosy (Hansen's Disease) – Leptospirosis – Listeriosis – Lyme Disease – Melioidosis – MRSA infection – Nocardiosis – Pertussis (Whooping Cough) – Plague – Pneumococcal pneumonia – Psittacosis – Q fever – Rocky Mountain Spotted Fever (RMSF) – Salmonellosis – Scarlet Fever – Shigellosis – Syphilis – Tetanus – Trachoma – Tuberculosis – Tularemia – Typhoid Fever – Typhus; Urinary Tract Infections