Osmosis in Red Onion Cells By: Youssef Gharib Brief Description of Osmosis in Red Onion cells: Osmosis is the diffusion of water from an area of low concentration to an area of high concentration across a semi-permeable membrane. The purpose of this lab is to compare the three different types of solutions affect on the relative size of the vacuole to the cell‚ the outer membrane of onion red cells (tunics) are used to figure out the different types. In the red onion you can see effects promptly
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Lecture 2- overview of the virus 1. The first step- the virus binds to a receptor-->entry and uncoating--> early gene expression-->replication of viral genome-->late gene expression->assembly of viral progeny-->exit 2. Concept 2.1- Virus entry is a multistep process with the ultimate goal of delivering viral genome (payload) into the cells. A. Binding to surface receptors- - a viral receptor is cell surface molecule‚ likely a transmembrane protein - a virus may need multiple receptors
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Biology Virus Essay A virus is a microorganism that cannot reproduce without a host. As a result of this‚ there has been a lot of controversy on whether or not a virus is a living or non-living organism. The dictionary.com definition for life is‚ “the condition that distinguishes organisms from inorganic objects and dead organisms‚ being manifested by growth through metabolism‚ reproduction‚ and the power of adaptation to environment through changes originating internally.” Viruses have characteristics
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The food borne illness I have chosen is salmonella. Question 1: What is the infectious agent (pathogen) that causes this infectious disease? The infectious agent (pathogen) that causes salmonella is called salmonella enteriditis. The bacteria is larger than a virus; but‚ is visible to the eye with the microscope. It is rod-shaped‚ gram negative‚ non-motile bacteria that does not form spores. Interestingly enough it communicates to its fellow bacteria via AHL. It infects the cell‚ multiplies
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Whitley Acre Mrs. Hill Honors English 9 26 January 2012 Outbreak: The Ebola Virus in Sudan‚ Zaire‚ and Uganda By killing ninety percent of its victims‚ Ebola is one of the most effective viruses known to man. This virus does not have any specific requirements for its host‚ it simply attaches itself to a species and does as much damage as possible. Ebola is extremely contagious; it is practically unstoppable‚ incurable‚ and unpreventable. The ease of transfer between species makes detection
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Anthrax is an infectious disease and it is caused by Bacillus anthracis. It is also called Splenic Fever‚ or Charbon. There are three types of Anthrax‚ there is cutaneous (anthrax of the skin‚) inhalation anthrax‚ and gastrointestinal anthrax. Anthrax is a large‚ rod shaped bacterium. It mostly affects animals but also can be transmitted to humans. Anthrax’s first incident was in 1500 B.C. in the early writings of Mesopotamia and the Book of Genesis. The Old Testament description of the 5th
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COMPARISON BETWEEN PLACENTA AGAR AND NUTRIENT AGAR ON GROWTH OF Staphylococcus aureus AND Escherichia coli Chloe Dominique Acero Kristine Marie Gonzales Hannah Marie Hermosisima Patrisha joy Morales Joanna Keziah Ramos Group 4 BSMT3E Background of the Study Placenta is an organ characteristic of a true mammal during pregnancy‚ joining mother and offspring‚ providing endocrine secretion and selective exchange of soluble‚ but not particulate
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In this review we will learn a lot of things about the effects of radiation in plants and some information about the plants and radiation. So as I go on my research I found out that‚ in moving from the water to the land‚ several living creatures had to subdue the number of problems. It must include the fortification against reproduction‚ fluid and nutrient transport‚ desiccation and ultraviolet radiation. So plants started from algae‚ it has been found in a long time photosynthesizing bacteria could
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1- Synthesis of silver nanoparticles by Bacillus sp.: The microorganisms in the most contaminated toilet Sink were isolated by dilution technique. The dominant bacterial strains are identified as Bacillus sp.‚ on the basis of morphological and biochemical characteristics. Gram’s staining: Gram positive and rod shape. They were serially diluted and spread on nutrient agar plates. The starch has been hydrolyzed and a clear zone by the addition of iodine solution. Visual identification: When bacterial
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Wolkov et al.‚ (2014) cited Penicillium canescens is a filamentous fungus that typically does not secrete sufficient levels of cellulase activity. Cellobiohydrolase I (CBH) of P. canescens (PcCel7A) homologously cloned and then expressed into a host strain RN3-11-7 (niaD-). The recombinant enzyme showed maximum activity at pH 4.0–4.5. They found that PcCel7A was stable at 50 °C and pH 4.5 for 3 hours‚ while at 60°C after 30 min of incubation it lost 45% of activity. The recombinant enzyme showed
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