yeast population lab essay

food (sugar) to sustain their populations with readings starting from 0.00 to 0.43 by the final reading. Test tubes 2, 4, 5, 6, 7 and 8 followed from least to greatest respectively in growth rates, with test tube 2 having the lowest readings of 0.67 in the beginning to 1.2 at the end and test tube 8 having the highest readings of 0.73 initially to 1.93 by the end. This is because with each increasing test tube, more food in the form of sugar was available to the yeast. The only test tube which seemed

Introduction Through this lab, we were trying to solve the problem of how different pH levels affect the population growth of yeast, which was based on the mm of carbon dioxide produced. Through this, our independent variable was the pH level of solution added to the test tube of yeast and sugar. Our dependent variable was the mm of CO2 produced, indicating population growth. For this lab, the proper control was a test tube with the yeast and sugar but no pH solution added. This was useful to

Lab Report 1 Purpose To develop an understanding of the metric system and use it to measure common objects. To also learn about how to report uncertainty in your measurements. Lab Observations Most flat objects do not consist of uncertainty. When we measured round objects, because of its shape, it contained uncertainty. Lab Answers 1. Using a metric ruler, determine the length of the items in Table 1.1 below: In the final column, you are to estimate your measurement precision. To do

INTRODUCTION MICROBIAL CELL CULTURES TECHNIQUES Microbial cultures are foundational and basic diagnostic methods used extensively as a in research tool in molecular It is important to have pure culture isolation. A pure culture is a population of cells as a multicellular organisms growing in the absence of other species or types. A method in which microbes are cultured by letting them reproduce in the predominated culture media under controlled laboratory conditions,

represents a population in which both allele and genotype frequencies remain constant, and thus no evolution is occurring. Evolution is the accumulation of changes in a population over the course of several generations. The Hardy-Weinberg equation is an equation that represents the null-hypothesis that no evolution is occurring and is given by p2+2pq+q2=1, where p and q are the frequencies of 2 alleles. There are 5 principles associated with the Hardy-Weinberg equation. There must be a large population size

rotten bananas, and yeast were used. The bananas chosen to be an accelerant for the growth of the yeast and were frozen so they would be easier to cut. The yeast was used because the drosophila melanogaster prefer this as a food source.  The vestigial and wild type flies were sexed (to determine their sex), sorted, and counted.  An initial population size of 100 total flies was decided so that it would be easier to determine the phenotypic percentage of the total population. Fly paper was placed

Lab Manual    Introductory Biology (Version 1.4)    © 2010 eScience Labs, LLC  All rights reserved  www.esciencelabs.com • 888.375.5487    2  Table of Contents:    Introduction:          Lab 1:  The Scientific Method  Lab 2:  Writing a Lab Report  Lab 3:  Data Measurement  Lab 4:  Introduction to the Microscope    Biological Processes:            Lab 5:  The Chemistry of Life  Lab 6:  Diffusion  Lab 7:  Osmosis  Lab 8:  Respiration  Lab 9:  Enzymes 

In their lab report Dietary Restriction in Drosophila, Piper, Mair, and corresponding author Partridge, biologist at University College London, constructed an experiment around the life span of the Drosophila, commonly known as the fruit fly. The purpose of this experiment was to extend lifespan of the adult Drosophila by implementing Dietary Restriction. Lifespan had been extended to the fruit flies by restriction of the availability of live yeast or by dilution of the whole food medium. This study

ScM program was a turning point in my life: it inspired a passion for science and made me realize that I could be a scientist. Immediately after I joined the program, I knew that the Hardwick laboratory was a perfect fit for me. There, I worked on a yeast project that focused on the genome-wide consequences of evolving secondary mutations, whereby these secondary mutations affect nutrient responses and/or heat-stress-induced cell death. Thus, mutation of any single gene may cause a genomic imbalance

Bob’s Bohemian Brewery A look into the General and Task Environments By: Kimberly Hutchins, Michael Huber, Jason Hoy, Emily Gauden, Erica Hoppe, and Dana Hunt Introduction In a world where large, corporate breweries rule the market, craft beer is created to please an audience that applauds the styles, techniques and flavors. Though craft beer can be purchased through several different outlets, the best place to thoroughly enjoy the entire experience of the specially made beer is in the brewery