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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Photo credits: Smarties by Andrew Dean‚ copyright Rebecca Douglas‚ retrieved 9/4/13 http://rebeccadouglas.photoshelter.com/image/I0000WDNZi_s2W4A Smarties Diffusion Experiment RESEARCH QUESTION How does changing the colour of smarties affect the extent of its passive diffusion? INTRODUCTION Passive diffusion‚ also known as simple diffusion‚ is used to describe the exergonic reaction of a substance where the substance passes in the direction of the concentration gradient. Most of the molecules
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Part A: Title: Diffusion Diffusion is the spontaneous movement of particles from where they are more concentrated to where they are less concentrated. For this experiment‚ a 14 cm glass was filled with cold tap water. A drop of red food coloring was dropped in the cup. A stopwatch was used to measure the time it took for the food coloring to get to the bottom of the cup. The average diffusion rate was .78 cm a second. If a different color was used‚ I do not think it would have made a difference
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Answers to Questions Activity 1: Simulating Dialysis (Simple Diffusion) (pp. 2–4) 9. All solutes except albumin are able to diffuse into the right beaker. Using distilled water in the right beaker and either the 100 MWCO or 200 MWCO membrane will remove urea from the left beaker and leave albumin If the left beaker contains NaCl‚ urea‚ and albumin‚ you can selectively remove urea by dispensing a concentration of NaCl into the right beaker equivalent to that in the left beaker and by using
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Therapeutic effects of postmortem care: A phenomenological cohort study Abstract Death‚ regardless of cause‚ can be extremely difficult for surviving family members to accept. It can also‚ however‚ be a difficult experience for the nurse charged with care of the patient. As postmortem care entails so much more than simply removing tubing and readying the body of the deceased for transport to the morgue‚ it is hypothesized that the nurse who is educated in the provision of proper
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only. Full length paper along with Registration Form should mailed to photon13@mits.ac.in Signature of the Applicant Signature of Head of the Institution with seal Date: Place: LASERS AND ITS APPLICATIONS Abstract: A laser is an optical device that emits coherent light (electromagnetic radiation). The term ’laser’ is an acronym for Light Amplification by Stimulated Emission of Radiation. Typically‚ lasers are thought of as emitting light in a narrow‚ low-divergence
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General Anatomy and Physiology Case Studies - Osmosis These two Case Studies come from a National Center on Case Studies. I think that a case study approach is very useful in applying knowledge and this is what makes you learn it better. They may be a little daunting when you read them but I will help you go through them. Please ask for help so this topic becomes more enjoyable for you. Part I—Too Much of a Good Thing Times were difficult in Habersham County. The skyrocketing prices of fuel and
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As trade along the Silk Road grew‚ Chinese weavers wanted to design silks that would appeal to other cultures. (Cultural Diffusion & the Silk Route of Ancient China) Some examples of this are the silk rugs called “ The Tree of Life‚” that reflected upon the Persian culture. This rug contained the roundel animal symbol and scenes of saddled horsemen. They used thread wrapped
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Name: Leslie Estrada Exercise 1: Cell Transport Mechanisms and Permeability: Activity 1: Simulating Dialysis (Simple Diffusion) Lab Report Pre-lab Quiz Results You scored 100% by answering 4 out of 4 questions correctly. 1. The driving force for diffusion is You correctly answered: b. the kinetic energy of the molecules in motion. 2. In diffusion‚ molecules move You correctly answered: a. from high concentration to low concentration. 3. Which of the following dialysis membranes has the largest
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EXPERIMENT 5 GAS DIFFUSION COEFFICIENT OBJECTIVES: Determine the gas diffusion coefficient of acetone using the established Winkelmann’s method KEYWORDS Diffusivity‚ Gas Diffusion Coefficient‚ Winkelmann’s method OVERVIEW The knowledge of physical and chemical properties of certain materials is important because very often process engineering deal with the transformation and distribution of these materials in bulk. One such property is diffusivity. Mass transfer by diffusion takes place
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