The Differences of Viruses and Bacterias

VIRUS VS BACTERIA VIRUS - viruses are far smaller than the bacteria - could not be see until the electron microscope was invented in the 1940s - viruses are not complete cells that can function on their own. - They cannot convert carbohydrates to energy, the way that bacteria and other living cells do. - Viruses depend on other organisms for energy. - viruses cannot reproduce unless they get inside a living cell - Most virus es con sist only of ti ny par ticles of n uclei c acid (the materi al tha t make s up genes) surrounded by a coat of protein. - Some have an outer enve lope as well . - There are thousands of viruses, and in humans they cause a wide range of diseases. - viruses need to enter the cell of another organism before they can be active and can reproduce. Secondly, you will be told that viruses consist of two or three parts: • All viruses have genes made from either DNA or RNA • All viruses have a protein coat that protects these genes • Some viruses have an envelope of fat that surrounds them when they are outside a cell.

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The Differences of Viruses and Bacterias