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Viruses

Viruses . A virus is a small infectious agent that can replicate only inside the living cells of organisms. Most viruses are too small to be seen directly with a microscope . Viruses infect all types of organisms, from animals and plants to bacteria and Achaea .

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Viruses

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  1. Viruses A virus is a small infectious agent that can replicate only inside the living cells of organisms. Most viruses are too small to be seen directly with a microscope. Viruses infect all types of organisms, from animals and plants to bacteria and Achaea.

  2. How do viruses reproduce? • Viruses cannot reproduce or express their genes without the help of a living cell. Once a virus has "infected" a cell, it will spread the cell's ribosome's, enzymes, and much of the cellular machinery to reproduce.Viral reproduction produces many, many progeny, that when complete, leave the host cell to infect other cells in the organism.

  3. Information about viruses. • All viruses have a protein coat that surrounds a virus , this is called a capsid.

  4. How does a virus get its energy? • A virus gets its energy from a host. A host cell is a living cell in which a virus reproduces. • Anything from a human to an animal can be a host for a virus.

  5. EUGLENA • Euglena are unicellular organisms classified into the Kingdom Protista, and the Phylum Euglenophyta. All euglena have chloroplasts and can make their own food by photosynthesis. They are not completely autotrophic though, euglena can also absorb food from their environment; euglena usually live in quiet ponds or puddles.

  6. AMOEBA • Amoebae's most recognizable features include one or more nuclei and a simple contractile vacuole. • Food enveloped by the amoeba is stored and digested in vacuoles. Amoebae, like other single-celled eukaryotic organisms, reproduce asexually. • Amoebae also has no definite shape.

  7. PARAMECIUM. • Paramecia are unicellular organisms belonging to the kingdom Protista, so they aren't exactly plants or animals. A paramecium can digest food, move through water by propelling themselves with cilia, and reproduce. As some of the oldest organisms on earth, they have evolved very simple methods of defense, genetic exchange, and mobility.

  8. BACTERIA • Bacteria is a large domain of single-celled, prokaryotemicroorganisms. Bacteria has a wide range of shapes, ranging from spheres to rods and spirals. Bacteria is abundant in every habitat on Earth, growing in soil, waste, water, and deep in the Earth's crust, as well as in the live bodies of plants and animals. There are typically 40 million bacterial cells in a gram of soil and a million bacterial cells in a milliliter of fresh water ; in all, there are approximately five nonillionbacteria on Earth.

  9. To :Mrs. Hutchens. • I hope you enjoyed my presentation[: . -Maryah Payton.

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