Diffusion and osmosis go hand-in-hand. Osmosis is generally the same as diffusion‚ however‚ deals solely with water. Osmotic pressure is the pressure of a solution against a semi-permeable membrane to prevent water from flowing into the membrane. In this lab‚ we are going to study tonicity; tonicity is the measure of this osmotic pressure and is the differential of pressure between two solutions separated by a selective membrane. To help identify the relative concentrations of solute particles of different
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Coli bacteria. We began the lab by first obtaining two sterile microcentrifuge tubes‚ one was label “GFP+” while the other one was “GFP–” because this one served as a control meaning nothing goes inside this one. With gloves on 25 microliters competent cells‚ which is e. Coli bacteria compete in calcium chloride and heat shock was added to each of the microcentrifuges. Eventually‚ both of the
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Objectives: 1. To identify the relative densities of some common liquids and solids. 2. To determine the densities of water‚ an unknown liquid‚ a rubber stopper‚ and an unknown rectangular solid. 3. To determine the thickness of a piece of aluminum foil using the density concept. 4. To practice proficiency in performing the following experimental procedures: pippeting a liquid‚ weighing by difference‚ and determining a volume by displacement. Apparatus: Tall glass cylinder‚ glass marble‚ rubber
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(Photosynthesis Lab background)
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Botany Lab ------------------------------------------------- Introduction This study observed the effects of different body fluids and solutions relative to breaking down bacteria‚ specifically in the human body. The enzymes we studied‚ lysozomes‚ help the body lyse‚ or break down bacteria by targeting peptidoglycan in bacterial walls. The solutions and fluids studied were saliva‚ mucus‚ tears‚ a stock solution of lysozomes‚ and distilled water. The solutions were placed in agar containing Micrococcus
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Page I - Cover sheet In the middle f the page give name and number of your microorganism In the right lower corner provide - your name - Lab section number (Biol 108-005) - Date submitted ( 4/18/2013) - the unknown tube # is 5 Page II table of result - This page will have your table of results include the following information - Name of the test - Medium used - Indicator used - your results Part III - All the test done As many pages as needed to do a complete job. in this section
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Experiment Title: Torsion Vibration. Introduction : Torsion is the twisting of a metallic rod shaped object‚ when a torque is applied on two sides’ perpendicular to the radius of a uniform cross-sectional bar. Objective : Determining the natural frequency of a system undergoing tortional vibration. Theory : Using Newton’s second law of tortional system. ( [pic] …………………. ( Equation 1 ) where Io = mass moment of inertia of the disk Hence‚ [pic] ……..……
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Boys’ Code of Conduct In the article “How Boys Become Men”‚ written by John Katz‚ he analyzes situations he experienced while growing up. Katz believes that boys become men by not showing fear or feelings and not ratting on others. As in the novel‚ The Other Wes Moore‚ both Weses are forced to become men at an early age. They experience events that push them to make decisions that make them grow and think like men do. Katz details the maturation process for boys‚ as the book‚ The Other Wes Moore
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Transformation of E. coli by plasmid DNA 1. Table showing the results from the selective plates |Plate |Plasmid |Contents of plates |Number of colony | | | | |White |Blue | |1 |Ligation mixture |Ampiclillin + X- gal + IPTG |10 |0
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Ravindra Nandigam‚ Ph. D.‚ South Texas College Name: Course Number: Semester: Phys 1417 Physical Science II‚ Homework #5 Instructions: 1. Type your name‚ Course number (=PHYS 1417.V01)‚ and Semester (=Summer I‚ 2013). 2. Type your answers. Include questions. 3. Make sure that all parts of each question are answered. 4. Turn in. Chapter 25 Rocks and Minerals 1. List the 8 elements which make up about 98% of Earth’s entire mass. 2. The most abundant element in the Earth’s interior is __________________
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