Evolution: What is evolution? Over time‚ through millions of years plants and animals have changed over time‚ in order to increase their chances of survival as well as to adapt to their environment. Evolution doesn’t happen overnight‚ in a couple of days‚ weeks‚ months‚ or years. It is a slow process that takes a very long time to notice. “The word evolution can be used in many ways‚ but in biology‚ it means descent with modification. In other words‚ small modifications that occur at the genetic
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progress‚ ways to stay alive and reproduce in the presence of an antibiotic that used to prevent these actions. At this time‚ the process of resistance development is a very difficult process and researchers do not know for sure about what can make a resistance happen. (AVMA) Antimicrobials are spread through the food production systems and the use of antimicrobials is approved by the United States Food and Drug Administration. (AVMA) Antibiotics are used to prevent known disease infections in animals and
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The term pneumonia is applied to many pulmonary infections which are most often caused by bacteria. Pneumonia caused by Streptococcus pneumoniae is the most common and is referred to as typical pneumonia. Atypical pneumonia is caused by other microorganisms such as fungi‚ protozoa‚ and viruses. The difference between them were discovered in 1883 by Friedlander and Talamon. Streptococcus pneumoniae was first discovered by Pasteur who isolated it from saliva in a person who had rabies in 1881. Depending
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Mass Extinctions What is the biological significance of mass extinctions? PART A You are living in the 23rd century. All knowledge of scientific things have been hidden from the human race by evil dictators during the last 2 generations of humans. One brilliant scientist‚ Albert Einstein the 16th‚ has rebelled against the dictators. He has devised a time machine and is asking for volunteers to go back in time and bring back important scientific discoveries. Your assignment is to go back to
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Kirby-Bauer Method of Antibiotic Effectiveness Purpose: The purpose of this lab was to determine the effectiveness of certain antibiotics and determine their zone of inhibition Data: Name of Antibiotic Zone of inhibition (mm) Effectiveness Streptomycin 15mm Sensitive Chloramphenicol 29mm Sensitive Novobiocin 20mm Intermediate Neomycin 13.5mm Intermediate Tetracycline 22mm Sensitive Analysis: 1. Which antibiotic was the most effective? The most effective antibiotic was Chloramphenicol
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breakthroughs was Fleming’s discovery of the antibiotic penicillin. That antibiotic had the ability to fight off bacterial diseases and infections through microbial antibacterial chemicals. Through a couple of years the bacteria grew resistant to the penicillin. That was due to gene mutation such as involving genes‚ which encodes proteins that are capable of deactivating or exporting the antibiotic (Liu‚ 2012). Over time the bacteria E. coli became resistant to the antibiotics‚ and once resistant then the medicine
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this experiment was that when antibiotics were mixed with yeast cells‚ the antibiotics decreased the yield of yeast cells. However‚ this is unexpected result because yeast is not a bacteria and therefore antibiotics should have no effect on them. The hypothesis that was tested was that antibiotics decrease the yield of yeast cells. In general the materials that were used in this experiment were a clean hemacytometer‚ a pipette‚ a solution of yeast with no antibiotics (culture A)‚ and a solution
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Introduction Botulism is a serious but rare infection that is caused by a bacterial poison (toxin). It usually affects babies who are 6 months of age or younger. What are the causes? This condition is caused by a toxin that is produced by the Clostridium botulinum bacteria. The toxin develops when a baby swallows (ingests) these bacteria‚ which then settle in the gut and grow. These bacteria often come from dust and soil. What increases the risk? This condition is more likely to develop in infants
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does not aid in the diagnosing or treatment of patients. The McCracken article on the treatment of AOM is an unfiltered source. This article is appropriate for nursing practice as it supports current guidelines and projects issues with continued antibiotic use. This article is evidence based summary. The parent interviews are general information resources. This information is appropriate for nursing practice because each interview gives a first-hand account of signs and symptoms in the case of
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Conclusions of DH5α DNA transformation with red colonies resistance to ampicillin and the lacZ gene Introduction: In this experiment‚ a plasmid with a gene that has resistance to the antibiotic ampicillin and has lacZ is used to transfer the resistance into E. coli bacteria in red colonies. This same technique is used to give diabetics their insulin‚ and to give dwarfs growth hormones. The point of this lab is to give the groups an idea how DNA can
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