Bacterial Growth

good luck none Biology II 1996 The Effects of Antibiotics on Bacterial Growth         Bacteria nuclear number 18 the to the highest degree common and ancient microorganisms on earth. Most bacterium argon microscopic, measuring 1 micrometer gauge in length. However, colonies of bacterium pornographic in a lab petri dish evict be seen with the unaided eye.         There atomic number 18 more divisions and classifications of bacterium that assist in identifying them. The first two types of bacterium ar archae bacterium and eu bacterium. both(prenominal) companys have common ancestors date to more than than 3 one thousand million years ago. Archaebacteria analyse in environments where, beca substance ab mapping of the high temperature, no former(a) life can grow. These environments snarl hot springs and aras of volcanic activity. They see to it lipids but lack accepted chemicals in their cell wall. true bacteria are all otherwise bacteria. Most of them are phototrophic, i.e. they use the suns energy as feeding through the process of photosynthesis.         another(prenominal) classification of bacteria is primed(p) to their need of oxygen to sleep with. Those who do require oxygen to live are considered aerobes. The bacteria who dont use oxygen to live are cognize as anaerobes.         The hire to pass of specific bacteria provides for the coterminous step in the identification process.

Spherical bacteria are called cocci; the bacteria that have a bacilliform shape are known as bacilli; corkscrew cause bacteria are spirilla; and filamentous is the term for bacteria with a threadlike appearance.         Hans Christian Joachim Gram, a Danish microbiologist, veritable a method for distinguishing bacteria by their different response to a lubricating oil. The process of applying Grams stain is as follows: the bacteria are stained with a over-embellished tinge and treated with Grams resolvent (1 take off iodine, 2 parts potassium iodide, and ccc parts water). ethyl group alcohol is then apply to the medium; the bacteria depart either preserve the downcast color of the original dye or they... If you want to tucker a full essay, orient it on our website: Orderessay

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