Diffusion and Osmosis Worksheet Diffusion is the movement of particles from areas of higher concentration to areas of lower concentration. It is a natural‚ random process. This means that it does not require extra energy input. 1a. These are pictures of molecules frozen at two different times. Draw arrows to show the direction each particle might travel due to diffusion in diagrams A and B. A. B. Random arrows Random arrows 1b. Describe the way the particles
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and analyzing the various microbes regularly encountered in the daily human environment becomes quite apparent when one gains even a very basic knowledge of how diseases are acquired and spread. The purpose of this lab was to collect and observe microbes from environmental and human
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not likely to kill or cause great bodily injury contagion- Disease transmission by direct or indirect contact microbes- a microorganism‚ especially a bacterium that causes disease antibiotics- agent that destroys bacteria: a naturally produced substance that kills or inactivates bacteria‚ but has no effect against viruses. vaccine- a preparation containing weakened or dead microbes of the kind that cause a disease‚ administered to stimulate the immune system to produce antibodies against that
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Virtual Lab Unit 3 1. Briefly describe the steps required to aseptically transfer bacteria from an unknown to a tube of liquid broth. You might have to research this using the "T" button (Tell Me More About...) To aseptically transfer bacteria from an unknown to a tube of liquid broth you have to flame the loop or wire before you begin to sterilize it. You then remove the caps from the tubes and flame the mouths of the tubes to prevent air-borne contamination. When all this is done‚ you have to
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water‚ even the health care process itself. Also‚ the use of reusable equipment/supplies‚ invasive devices or techniques (catheters‚ valves‚ etc.). Patients in a hospital setting are also exposed to more drug resistant strains of microbes; as in this setting the microbes are selected at a higher rate than outside the hospital due to antibiotic usage in the hospital. NI usually involve the urinary tract‚ respiratory tract‚ surgical incision sites‚ and blood; again usually points of entry/exit from
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Probiotics are live microorganisms which are believed to provide health benefits when consumed. The term probiotics meaning ‘for life’ (pro= ‘for’ or ‘in support’‚ biotic= ‘life’) is derived from Latin & Greek language. The term was first used by Lilly and Stillwell in 1965 to describe “substances secreted by one microorganism which stimulates the growth of another microorganism” i.e. which is exactly opposite of ‘antibiotics’‚ later in 1971 Sperti used the term probiotics to describe “tissue extracts
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Testimonies to Congress Society & Genetics 5 Landecker‚ Hannah Flaherty‚ Devin October 25‚ 2012 Testimony 1 Good Afternoon‚ Congress. Thank you for inviting me to discuss the significant issues and possible actions that can be brought to the antibiotic resistance issue. My name is Dr. Joe. I am a professor of professor of Society and Genetics. Through the research facilities at the university‚ I cultivate bacteria and observe what harms or benefits the different species
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Antibiotic Sensitivity lab A. Define the term selectively toxic. Why is it an important feature of antimicrobial agents? Selective toxicity is the ability of a chemical or drug to kill a microorganism without harming its host. Selective toxicity is important to microbial agents because it enables these agents to inhibit or kill a microorganism by interacting with microbial functions or structures different from those of the host thereby showing little or no effect to the host. B. What
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QH-21ST AUG MD-10TH AUG http://thegrabup.com/?p=811 Significance Of Osmosis (700-1200) Osmosis is a process of movement of solvent through a semi permeable membrane from an area of high water concentration to an area of low water concentration to equalize the concentration of solute to both side of the membrane. . Water is sometimes called "the perfect solvent‚" and living tissue (for example‚ a human being’s cell walls) is the best example of a semipermeable membrane. Osmosis process as
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Bacteria and Viruses Breann Johnson COM/155 03/17/2013 University of Phoenix Bacteria and Viruses Almost 56‚000 people are hospitalized each year‚ and over 1‚300 die because of food borne bacteria and virus microbes. Bacteria and viruses are tiny microscopic pathogens that can cause infectious disease‚ or even result in death. “Infectious diseases remain a major cause of death‚ disability‚ social‚ and economic disorders for millions of people around the world. Poor health
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