Pathogens by Ashley Gutierrez https://padlet.com/1717856/zndpmmj0m6fd a bacterium, virus, or other microorganism that can cause disease. en-us 2016-12-19 15:42:58 UTC 2016-12-19 16:24:33 UTC hello@padlet.com Virus 1717856 https://padlet.com/1717856/zndpmmj0m6fd/wish/144332460 Definition: an invective agent that typically consists of a nucleic acid molecule in a protein coat, is too small to be seen by light microscopy, and is able to multiply only within the living cells of a host.

Characteristics: Because most viruses are extremely well adapted to their host organism, virus structure varies greatly. However, there are some general structural characteristics that all viruses share. All viruses have a capsid or head region that contains its genetic material. The capsid is made of proteins and glycoproteins.

what are they made of: A virus is basically a tiny bundle of genetic material either DNA or RNA carried in a shell called the viral coat, or capsid, which is made up of bits of protein called capsomeres. Some viruses have an additional layer around this coat called an envelope.

How do they reproduce: the virus attaches itself to a specific host cell (the cell in which it will reproduce) the virus injects its genetic material into the host cell. the host cell uses the genetic material to make new viruses. the host cell splits open, releasing the viruses.

what disease can they cause: chickenpox, Flu, herpes, shingles.    
]]> 2016-12-19 15:47:59 UTC https://padlet.com/1717856/zndpmmj0m6fd/wish/144332460 Bacteria 1717856 https://padlet.com/1717856/zndpmmj0m6fd/wish/144335006 DEFINITION: plural form of Bacterium.
CHARACTERISTICS: Bacteria are like eukaryotic cells in that they have cytoplasm, ribosomes, and a plasma membrane. Features that distinguish a bacterial cell from a eukaryotic cell include the circular DNA of the nucleoid, the lack of membrane-bound organelles, the cell wall of peptidoglycan, and flagella
WHAT ARE THEY MADE OF: Bacterial cells have no nucleus and other organelles(sub-units within a cell with a specific function) bound by a membrane, except for ribosomes. Bacteria have pili, flagella and a cell capsule (most of them), unlike animal or plant cells. An organism without a nucleus is called a prokaryote
HOW DO THEY REPRODUCE (STEPS): Bacteria are asexual organisms that typically reproduce through a process known as binary fission. During binary fission, cells replicate and copy DNA to new cells before cell division occurs.
WHAT DISEASES CAN THEY CAUSE:Common pathogenic bacteria and the types of bacterial diseases they cause include: Escherichia coli and Salmonella cause food poisoning. Helicobacter pyloricause gastritis and ulcers. Neisseria gonorrhoeae causes the sexually transmitted disease gonorrhea]]> 2016-12-19 15:58:53 UTC https://padlet.com/1717856/zndpmmj0m6fd/wish/144335006 Fungi 1717856 https://padlet.com/1717856/zndpmmj0m6fd/wish/144336677 DEFINITION:  plural form of fungus

CHARACTERISTICS: Most fungi grow as tubular filaments called hyphen. An interwoven mass of hyphen is called a mycelium. The walls of hyphen are often strengthened with chitin, a polymer of N-acetaminophen.

WHAT ARE THEY MADE OF:  The majority of fungi - except for the one-celled oranisms - are composed of hyphae; threadlike tubular filaments. Hyphae is the plural of hypha. A hypha has a rigid wall around it generally made of chitin. The outer skeletons (exoskeletons) of insects are also made of chitin.

HOW DO THEY REPRODUCE (STEPS): The reproduction of fungi can be either sexual or asexual. Sexual reproduction, as with other organisms, involves the fusion of two nuclei when two sex cells unite. This joining produces spores that can grow into new organisms. However, the majority of fungi reproduce asexually.

WHAT DISEASES CAN THEY CAUSE:  Athletes foot, Jock itches, Ringworm 
]]> 2016-12-19 16:06:16 UTC https://padlet.com/1717856/zndpmmj0m6fd/wish/144336677 Parasites 1717856 https://padlet.com/1717856/zndpmmj0m6fd/wish/144339415 DEFINITION: an organism that lives in or on another organism (its host) and benefits by deriving nutrients at the host's expense.

CHARACTERISTICS: Characteristics. As originally defined, parasites included any organisms that live by drawing food from a host organism

WHAT ARE THEY MADE OF: A parasite is an organism that lives in another organism, called the host, and often harms it. It is dependent on its host for survival - it has to be in the host to live, grow and multiply.

HOW DO THEY REPRODUCE (STEPS): A host in which parasites reproduce sexually is known as the definitive, final or primary host. in intermediate hosts, parasites either do not or do asexually, but the parasite always develops to a new stage in this type of host.

WHAT DISEASES CAN THEY CAUSE: Flatworms, tapeworms, thorny-headed worms, and roundworms

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