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Transcript
Microbes 1 Microbe - a tiny organism that can be seen only with a microscope including unicellular protists. Prokaryote - a unicellular organism that lacks a true nucleus and membrane-bound organelles. Prokaryotes are commonly called bacteria. Bacteria – Any of a large group of one-celled organisms that lack a membrane-bound nucleus. Fungi – any of a diverse group of eukaryotic single-celled organisms that live by decomposing and absorbing the organic material in which they grow. Algae – unicellular or multicellular organisms classified as plants, occurring in fresh or salt water, but lack true stems, roots, and leaves. Bacterial disease – a disease caused by bacteria (e.g. strep throat) Pathogen – any microbe that causes one or more diseases. Infectious Disease - any disease that is caused by a pathogen (e.g. MRSA) Contagion – an infectious disease or infectious diseases that can be transmitted or spread from one organism to another. Carrier – an organism that is infected with and can transmit a disease-causing microbe to another living thing. The carrier can show no symptoms of illness or disease. Noninfectious Disease - diseases that are not spread from one organism to another (e.g. sickle-cell anemia). Parasite – an organism that lives and eats off of another organism. In most cases parasites will not kill the host, but they can sicken or weaken the host. Vector – an organism that helps a disease spread. Epidemic – a major outbreak and spreading of a disease. Pandemic – a worldwide epidemic. Contagious Disease – a disease that can be spread from one person to another. (e.g. mono) Antibody – a chemical substance that helps destroy pathogens. Antimicrobial Product – a substance that is designed to kill microbes before they can enter your body. Antibiotics – drugs that kill bacteria or prevent their reproduction.