DNA QUESTION 1995: L. PETERSON/AP BIOLOGY The diagram below shows a segment of DNA with a total length of 4‚900 base pairs. The arrows indicate reaction sites for two restriction enzymes (enzyme X and enzyme Y). (A) Explain how the principles of gel electrophoresis allow for the separation of DNA fragments. (B) Describe the results you would expect from electrophoretic separation of fragments from the following treatments of the DNA segment above. Assume that the digestion
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TITLE AND AUTHOR Lab 7 Analysis of purified Concanavalin A via:Hemagglutination INTRODUCTION The purpose of this lab was to test the biological activity of ConA by performing a hemagglutination assay. If ConA is active then agglutination will occur due to ConA’s free receptors being able to bind to the glucose residues on the sheep’s red blood cells. If ConA is not active then no agglutination will occur. To test the hemagglutination reaction‚ two types of ConA solutions
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II. Genetic variation is accounted for in Meiosis I due to crossing over. No formal hypothesis was made due to the fact that this lab was a simulation and observation of prior knowledge. The lab did not go as expected for prophase was supposed to be the second longest phase in exercise 3A but Metaphase ended up with the higher percentage (Table 3.1). Because this lab was solely based on observation‚ there was little space for error‚ but as mentioned above‚ metaphase ended up with the higher percentage
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will continue fermentation until one of two things happen - either alcohol concentration will exceed tolerance‚ or yeast runs out of food. 1 Figure 1 Process of Glycolysis and Anaerobic cell respiration in Yeast Hypothesis It is predicted that the fermentation of yeast will decrease with the increase in the concentration of alcohol because the alcohol concentration goes above the yeast cell’s tolerance and hence‚ the yeast cells die
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Aim: 1) To determine the effects of different salt concentration on the percentage of weight change in potato cubes 2) To determine the isotonic solution concentration for the potato Hypothesis: 1) If the concentration of the salt solution is higher than the concentration in the potato cubes‚ the percentage of weight change in potato cubes will be higher (positive). If the concentration of the salt solution is the same as the concentration in the cell‚ there will be no net movement of water through
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LAB 1 1. Describe the function of the following pieces of safety equipment and how each might be used: (10 points) a. Eye Wash (2 points) The eyewash fountain is used to rinse chemical splashes off the eyes. They are used by rinsing the eyes 15 to 30 minutes with water. b. Fire Blanket (2 points) Fire blankets are used to extinguish small fires. They are used by covering the small fires with the blankets until it extinguishes. c. Shower (2 points) Safety showers were made to eliminate any
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Evolution Lab “Evolution by Natural Selection” The object of this experiment is to determine how changing the size of the beak of a finch will affect the population as well as the growth rate of the finch’s beak. The reason for the experiment is to evaluate evolution and how it affects the finch’s population‚ and how natural selection is always present in life. In this experiment I will show that the finch will continue to evolve until its beak has reached the optimal size for sustaining
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Biology 20 IB Design Lab Does increasing or decreasing the ph level of a 3% concentration H2O2 (l) solution affect the amount of oxygen released between 15.0ml of the solution and a 5g sample of liver? The reaction is measured by the difference in mass of a balloon that is used to capture the amount of gas released by the catalase enzyme found in liver reacting with a basified 3% H2O2 (l) and an acidified 3% H2O2 (l) . Chemical reactions occur when two or more molecules interact and the molecules
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Instructor’s Manual to accompany Hole’s Human Anatomy and Physiology Laboratory Manual‚ Cat Version and Fetal Pig Version Twelfth Edition Terry R. Martin Kishwaukee College i Instructor’s Manual to Accompany LABORATORY MANUAL TO ACCOMPANY HOLE’S HUMAN ANATOMY AND PHYSIOLOGY‚ TWELFTH EDITION. Published by McGraw-Hill Higher Education‚ an imprint of The McGraw-Hill Companies‚ Inc.‚ 1221 Avenue of the Americas‚ New York‚ NY 10020. Copyright © 2010 by The McGraw-Hill Companies‚ Inc
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oxygen/ the rate of photosynthesis Background: In photosynthesis‚ there are two main parts‚ including light dependent and light-independent reactions. Plants use the energy from light for producing sugar‚ which is being converted into ATP by cellular respiration. They also are the only organisms that produce oxygen along with glucose and fructose chains within the light-independent phases of photosynthesis. This process takes place in the chloroplasts of plants‚ which include chlorophyll. Chlorophyll
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