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6th Grade Pathogens

A virus is a small infectious agent that replicates only inside the living cells of other organisms. They can infect all types of life forms, from animals and plants to microorganisms.
Bacteria are microscopic living organisms, usually one-celled, that can be found everywhere. They can be dangerous, such as when they cause infection, or beneficial, as in the process of decomposition.
When a virus enters your body it invades some of your cells and takes over the cell machinery, redirecting it to produce the virus
Viruses are even smaller than bacteria
A fungus or fungi is any member of the group of eukaryotic organisms that includes unicellular microorganisms such as yeasts and molds, as well as mushrooms
bacteria are single-celled prokaryotes
Bacteria are much smaller than fungi, do not have nuclei or other organelles.
Eukaryotic cells contain membrane-bound organelles, including a nucleus
Prokaryotic cells do not contain a nucleus or any other membrane-bound organelle.
Parasite an organism that lives in or on another organism (its host) and benefits by deriving nutrients at the host's expense.
Disease - A sickness in humans, animals, or plants which often has a known cause and can be identified by symptoms
Infectious - A disease that can be passed from one person to another, caused by a pathogen
Noninfectious A disease that cannot be spread from person to person, caused by genetics or environmental factors
Pathogen Something that causes a disease (ex. Virus, Bacteria, Fungi, Parasites)
Virus A small particle that must have a host cell to replicate
Fungi - a single-celled or multi-celled plant-like organism
Antibiotic A substance that kills or inactivates bacteria
Antiviral A substance that destroys or inactivates viruses
Created by: wjewell