Have antibiotics won the battle against bacterial infection or are they creating more serious health problems for the future? Antibiotics are substances that kill or restrict the growth of bacteria and fungi. They can be used to help the body fight infection from micro-organisms, antibiotics is making use of one micro-organism's natural means of attacking another. The debate on whether antibiotics are a safe cure for bacterial infections has been a long debated topic. The purpose of this essay is
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Biology: Concepts and Connections, 6e (Campbell) Chapter 1 Introduction: The Scientific Study of Life 1) Which of the following statements about the leopard is false? A) Leopards are the largest cat in the genus Panthera. B) Leopards, like lions, can roar. C) Leopards prefer to eat their kill in trees. D) Leopards are well-adapted for nocturnal hunting. E) Leopards are normally solitary animals. Answer: A Topic: Opening
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Bursting the Antibacterial Bubble The speaker for the speech entitled Bursting the Antibacterial Bubble use very clear and vivid language. A couple of examples from the text include “today millions of Americans are trying to build a bubble around themselves and their families to keep out germs. The bubble is not made of plastic, however, billions of dollars’ worth of antibacterial hand wipes, tissues, soaps, and sponges.” The language included in this speech tends to be very clear out and supported
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MADRE DE CACAO (GLIRICIDIA SEPIUM) EXTRACT CANDLE AS PESTICIDE AGAINTS TERMITES JOHN MARK F. MAKAHIYA PAULINE ELVIRA C. MARTINEZ JOHN PAUL G. MERRERA NICOLLE C. PABITON CATHERINE B. PAZ JOHN ARVIE S. SARMIENTO Introduction One of the problems in houses and farms in our country are termites. Termites are pale- colored, soft-bodied social insect that live in colonies consisting usually of winged sexual forms, wingless sterile workers, and soldiers, feed on wood, and include some which
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spread of germs and is necessary before and after use. A solution of 1 tablespoon of bleach to a gallon of water for is good for disinfecting (U.S. Department of Health and Human Services). Washing vegetables and fruits is also important to remove bacteria. Separating foods is necessary to prevent cross contamination. The U.S. Department of Health and Human services suggest using a separate cutting board for meat, poultry, seafood, and eggs from one used for produce (n. d.). It is also suggested
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or protein coat. 2. Some have an envelope (membrane) 3. Nucleic acid – either: RNA, DNA C. Size 1. About 20 nanometers to 250 nm (.0000000020m) in size 2. Can only be seen with electron microscope 3. Approximately 1000 times smaller than a bacteria D. Shapes E. Life Cycle 1. Viral DNA must invade a living cell to replicate a. Plant cell – through injury in cell wall b. Animal cell – punch hole or endocytosis c. Virus – restricted to one cell. 2. may go through
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population. Log Phase Logarithmic, or exponential, increase in population. Stationary Phase Period of equilibrium; microbial deaths balance production of new cells. Death Phase Population Is decreasing at a logarithmic rate. Prokaryotes (Bacteria) Gram Positive Low G + C Firmicutes 1. Clostridium: enospore-producing (obligate anaerobes) 2. Bacillales: a. Bacillus – rod-shapes, makes endospre, aerobic and facultative anaerobe b. Straphyloccus- clusters of cocci
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Importance of Gram-positive - Gram-positive bacteria are so called because they take up the violet stain used in the Gram staining method. Gram-positive bacteria are able to retain the crystal violet stain due to their thick peptidoglycan layer in their cell wall. This layer is superficial to the cell membrane. Cell walls provide structural support, protection and rigidity to the cell. Importance of Gram-Negative - Gram-negative bacteria are at the root of about 30% of the hospital-acquired
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Assignment on Complexity of Human Cell The universe is alive with movement: moons rotating around planets, planets orbiting stars, gaseous rings rotating and expanding, meteors and comets soaring through space at great speeds; and all the while the entire universe are expanding at an accelerated rate. Thankfully for us, it is not a dance of chaos; gravity governs the dance, allowing stars, planets and moons to move coherently to one another. In like manner, there is a vast micro-universe softly
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Assessment Task 2: Laboratory Experiment and Report Introduction Bacteria are one of the many culprits that cause disease and even death. Surface cleaner are sold to help disinfect and eliminate bacteria. Some of the common surface cleaners used are alcohol, tea tree oil and water. ‘Alcohols are effective disinfectants as they evaporate quickly, leaving no residue. They are capable of dissolving lipids, which makes them effective against lipid-wrapped viral cells such as HIV and hepatitis’ (healthE
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