The Osmosis Lab SHS Lacrosse Monster #2 Dates performed: 10/10/11 and 10/11/11 Introduction: The purpose of the laboratory investigation was to observe the diffusion of water across a semi-permeable membrane. In this lab‚ dialysis tubing was used to represent the semi-permeable cell membrane. Three dialysis tubes were prepared with 5% sucrose solution and were soaked in solutions of different concentrations. The diffusion of water across a semi-permeable membrane is called osmosis. When
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Michael Castelli Keegan Bauman Potato Lab Dr. Peano Block 1 Introduction: Potatoes are just your average food; they have been around for as long as the human race can remember. In this lab we will make them be a prime example of osmosis‚ which is a transport mechanism. In this lab the problem being tested was what environment affects the mass of the potatoes the most. The independent variable is the environments used salt‚ water and iodine solution. The dependent variable is the mass of
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Title- Mitosis Abstract –For this lab there is no experiment to be done only questions to be answered. In this experiment we will categorize and count the cells to compute the mitotic index of the total root area. Introduction – The purpose of this experiment is to answer questions associated with the onion root tip photos that are pictured in the lab. The questions for this lab will be drawn from the discussion and review section at the beginning of the mitosis lab. Once that section has been reviewed
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Lab 10 Name: Complete the following then save with your name and attach to the dropbox for lab 10. Data Tables and Post-Lab Assessment Experiment 1 Post-Lab Questions 1. Label each of the arrows in the following slide image: A. Chromosomes B. Nucleus C. Cytoplasm D. Cell wall 2. What is the difference between the rough and smooth endoplasmic reticulum? 3. Would an animal cell be able to survive without mitochondria? Why or why not? 4. What
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Year 11 Lab Report Template Experiment – Modelling A. Title • A brief concise descriptive title B. Aim • What are you trying to find out? • What do you want to learn? C. Hypothesis • Write a possible solution to the problem. • If ………………………………………………………………………………………….then ………………………………………………………………………………………………………. • Make sure the above statement is testable. • The Independent variable is ……………………………………………………..
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detrimental. The purpose of this lab is to
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Evolution Lab The finches on Darwin and Wallace Islands feed on seeds produced by plants growing on these islands. There are three categories of seeds: soft seeds‚ produced by plants that do well under wet conditions; seeds that are intermediate in hardness‚ produced by plants that do best under moderate precipitation; and hard seeds‚ produced by plants that dominate in drought conditions. The lab is based on a model for the evolution of quantitative traits-characteristics of an individual that
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PROBABILITY and MENDELIAN GENETICS LAB Hypothesis: If we toss the coin(s) for many times‚ then we will have more chances to reach the prediction that we expect based on the principle of probability. Results: As for part 1: probability of the occurrence of a single event‚ the deviation of heads and tails of 20 tosses is zero‚ which means that the possibility of heads and tails is ten to ten‚ which means equally chances. The deviation of heads and tails of 30 tosses is 4‚ which means that the
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into pET28b plasmid vector. The resulting recombinant pET28b-LdhA expression vector was then transformed after introduction into E. coli. The ligation gave 15 colonies of recombinant DNA which later gave 6 recombinant plasmids as revealed by gel electrophoresis. 1. Introduction The NADH-dependent lactate dehydrogenase (EDH) is a key enzyme in the fermentative metabolism
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xxx1 xxxxxx Ms. xxxx Biology 20 November 2013 Osmosis Lab Problem: What’s the order of the concentration for each solution and how does it affect the movement of water? Hypothesis: Experimenter thinks the order of the solutions according to their concentration is D‚A‚E‚C‚B‚ from smallest. And the water will pass through semipermeable tubing bag from low to high concentration to thin the concentration inside the bag. Osmosis is a diffusion of water particles and is one of the passive transport
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