Aim: To investigate the effect of skin sensitivity in response to cold temperature in different parts of the body by timing the maximum amount of time in which ice-pack can be held to that area. Hypothesis: If the layer of skin is relatively thin‚ the nerve response to cold will be the fastest‚ increasing the skin’s sensitivity. This therefore means that the fastest responses to cold will be in the face‚ and specifically the nose. The skin consists of 3 main layers; the epidermis‚ dermis and
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Title: Homeostasis Date: 19th January 2010 Aim: To observe‚ draw and label the parts of a nephron. Apparatus: Slide of the transverse section of a kidney Pencil Paper Microscope Method: The slide of the transverse section of a kidney was mounted on the microscope and observed under high power. Drawings of the parts of the nephron were made. Calculations of Magnification: Loop of Henle One Ocular Division = 0.22 µm Size of Specimen = 2 ocular divisions Conversion of Ocular
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darwins finches While spending time studying species on the Galapagos Islands Charles Darwin noticed some considerable differences between the finches varying from island to island. “Charles Darwin was the first to see reason in the creation of different species‚ instead of just assuming they appeared out of nothingness.”(Darwin 169). Darwin was also the first to understand and correctly explain how these differences occurred. “Although Darwin understood why there were these differences in the
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Diffusion and Osmosis Through Dialysis tubing We did this experiment to test the diffusion of different substances through dialysis tubing. We used what we knew about diffusion to make predictions on what we thought the mass of the dialysis tubing to be after submerging them for 30 mins and we knew that diffuse occurs from highest concentration to lowest concentration. Since the dialysis tubings are filled with different substances than what they are being put into then they should all gain
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Cintya G. Alarcon Donna Biology 121 section WDF Lab Report # 1 1.On the graph paper in Figure 3‚ plot a graph of your experimental results. Choose an appropriate number scale for the Y-axis and label it Number of Infections. Choose an appropriate number scale for the X-axis label it Number of Exchanges. 2. In a few sentences‚ summarize the results of the experiment. In your summary‚ include data from your summary chart and graph. Statements of results should include only facts—no interpretation
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Title: The Beaks of Finches # of the Lab: Purpose: The purpose of this lab is to be able to work with different tools that will serve to model finch “beaks” and compete with other “finch” species to see which “beak” best adapted for obtaining specific food. Materials: 1 small plastic dish or cup‚ 1 large non-breakable dish‚ 1 tool to serve as a “beak”‚ large seed‚ small seed‚ 2 pairs safety goggles Procedure: See Lab # The Beaks
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Nick Sarris‚ April 3‚ 2013‚ D-Bell Biology Virtual Electrophoresis Lab – Genetic Science Learning Center Use the link to complete the following lab. Submit through edline when you are finished http://learn.genetics.utah.edu/units/biotech/gel/ Title‚ name‚ date and bell (8 pts) Place your answer below the question and skip between questions (2 pts) Each question is worth 3 points 1. Why can’t DNA be sorted physically‚ using a microscope?- They are so tiny that they are unable to be
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Alvaro Comino LAB REPORT 4 CONNECTIVE TISSUE (SPECIALIZED) I. Abstract In this experiment‚ identification and classification of different types of connective tissue was performed. Also‚ cells and extracellular matrix was to be identified in them. For this‚ different already prepared slides were chosen and observed under the microscope to then identify the different parts. II. Introduction Apart from the bone and cartilage‚ the rest of the specialized connective tissues are divided
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Lab Report: Scientific Method Your Name: Alyssa Melincoff Purpose of this Lab What is the goal of this lab? What question is it trying to answer‚ or what problem is it trying to explain? To find out how table salt affects the boiling temperature of water. Hypothesis After reading the lab instructions - but before starting the lab - record your best “educated guess” about what will happen in the experiment. What hypothesis can you generate about the effect of adding salt to water? Adding
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Lab 1 Diffusion‚ Osmosis‚ and Water Potential of Glucose Problem: What effects will glucose have on diffusion‚ osmosis‚ and water potential? Background: All living things have certain requirements they must satisfy in order to remain alive. These include exchanging gases (usually CO2 and O2)‚ taking in water‚ minerals‚ and food‚ and eliminating wastes. These tasks ultimately occur at the cellular level‚ and require that molecules move through the membrane that surrounds the cell. There
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