This website uses cookies to ensure you have the best experience. Learn more

Yeast Culture Lab Essay

1353 words - 6 pages

Yeast Culture Lab

Introduction
Yeast is a one-celled, microscopic organism, which is part of the fungi kingdom. Yeasts do not make up a single group (Smith & Smith, 2012). Yeasts use organic material as a means of making energy, which make them chemoorganotrophs (Smith & Smith, 2012). Carbon is procured primarily from hexose sugars, such as fructose and glucose. Yeast need either oxygen for aerobic cellular respiration or for species that are anaerobic, but also have aerobic methods creating energy (Smith & Smith, 2012). There are no species of yeast species that are known to grow only anaerobically. Yeasts thrive in an environment with a slightly acidic ...view middle of the document...

Materials
For the experiment, the materials needed are the following:
(1) Microscope
(1) Balance
(1) Test tube rack
(4) 18mm x 150 mm culture tube
(4) 10 ml graduated cylinder
(1) Eye dropper
(1) Ammonia mixture
(1) Distilled water
(1) Sugar mixture
(1) Microbe mixture
(4) Yeast packets
Method
The following methods are the steps needed to carry out the yeast culture experiment:

(1) Label the four test tubes with the different materials that will be mixed with the yeast. The labels should read: Ammonia, Control, Sugar, and Microbe. The time and concentration of each solution should be under the identification label on each tube. The data sheet should also reflect these materials for thorough recording of the results of the experiment.
(2) Each tube should be filled with 10 ml of its specific solution.

(3) In a separate container mix a yeast suspension solution and add two drops of this solution into each tube.

(4) Prep the microscope.

(5) Take one drop of solution out of each tube and observe it under the microscope. Document the results of each solution on the data sheet. Repeat this step at intervals of 24, 48, 72 and 96 hours.
(6) Once the experiment has been completed, record the data and analyze the results as well as clean up and put away the equipment.
Results
After the experiment was carried out and, the data was analyzed, the hypothesis was found to be accurate in that the yeast and other solutions in the test tubes became active, especially the sugar solution. In all instances the yeast mixture physically expanded in the test tubes and the sugar solution expended twice as much causing the solution rising to the rim of the test tube.
The sugar and yeast solution levels grew exceeding the 200 count level while the other solutions only exceeded the 100 count level. Below is the population graph, which displays a constant rise in all solutions, which suddenly peak off and decline just as quickly. The data on the graphs clearly shows that the population peaks and then declines because the reproduction rate was increasing without a death rate. As the yeast solution began to die off, they died at the same rate because reproduction ceased and there were no additional resources. Once the resources were depleted, the population died off.

[pic]

|Intervals |Control |Limited reproduction |Additional Food |Introduced |
| | | | |Predation |
|1 (0 hours) |5 |6 |6 |6 |
|2 (24 hours) |13 |11 |12 |12 |
|3 (48 hours) |94 |64 |167 |79 |
|4 (72 hours) |77 |43 ...

Other assignments on Yeast Culture Lab

Course Syllabus Essay

2610 words - 11 pages . Note: Software may already be installed on the school’s lab computers; check with your lab administrator. Need Help? Contact Product Support at http://www.mathxl.com/support/contactus.htm for live CHAT, email or phone support. MyMathLab includes access to the Pearson Math Tutor Center! Visit www.aw-bc.com/tutorcenter for available tutoring services. Call for help toll-free help at 1-888-777-0463 ▪ Sunday through Thursday, 4 PM - 11 PM

Management Essay

1477 words - 6 pages Boeing Management Planning Heather Oetzel MGT 330 October 22, 2012 Joe Cheng Abstract Boeing is known as “the world’s leading aerospace company and the largest manufacturer of commercial jetliner and military aircraft combined ("The Boeing Company: About Us", 2012). Every company uses different types of management techniques including how the planning function of management is used. Planning allows organizations to develop how the

Assisted Suicide

1015 words - 5 pages Should physician-assisted suicide be legal? While I believe if one chooses to end his or own life through physician assistance for reasons that they chose, the choice should be up to the individual. Physician-assisted suicide should be at one's discretion. “Assisted Suicide, also called Voluntary Euthanasia, is currently a contentious issue in many countries. Because Euthanasia is legal in a few modern democracies: the Netherlands, Belgium

Tanglewood Case 1

797 words - 4 pages organization to help find new employees. Tanglewood is an outdoors activities store and there could be talent out there that the outside organization could be better at finding than Tanglewood ever could. Next, should Tanglewood do external hiring or internal hiring? I would recommend internal hiring for upper-level positions because the people who are hired internally already know the culture and values of Tanglewood. As far as low level or

Nnnnn

1391 words - 6 pages Есе по въпроса: Кои от всички „действащи” лица могат да се разглеждат като морално отговорни и в какво именно? по казуса Форд „Пинто” Корпоративните злодеяния са нанесли повече вреди на обществото от всички улични престъпления взети заедно. Според данни на ФБР сумата от уличните престъпления възлиза на $3.8 млрд. годишно, а загубите от корпоративните измами между $100 млрд. и $400 млрд. годишно

The Penis

1052 words - 5 pages The short story ”The Penis” is written by Hanif Kureishi. The short story is about a penis, which has been separated from its owner Doug, who we hear from later on. At first though we hear about a guy called Alfie who was “a cutter – a hairdresser – and had to get to work”. He is having breakfast with his wife, when she asks him what he did last night, and if he had a good time last night? Alfie can not remember what he did last night, he then

Managed Care Paper

543 words - 3 pages Managed Care and Case Management Care Marvin Lloyd BSHS/402-Case Management 27 August 2012 Virgil Miller Managed Care are techniques employed to help reduce the cost for providing health benefits and a system for improving organizations quality of care

Media

439 words - 2 pages The life expectancy is lower; so people are not kept alive with drugs for decades in a virtual sleep state. There is less state education; so kids don't have it drilled into them that their only goal in life is to make money, at the cost of 'everything' else. The health care is less; so diseases, usually brought by Westerners, kill many more than they do in countries where drug companies can make a fortune from selling medicines that aren't

Chapter 6 International Business

7113 words - 29 pages CGGGG The Political Economy of International Trade Chapter Outline OPENING CASE: Why Are Global Food Prices Soaring? INTRODUCTION INSTRUMENTS OF TRADE POLICY Tariffs Subsides Country Focus: Subsidized Wheat Production in Japan Import Quotas and Voluntary Export Restraints Local Content Requirements Administrative Polices Antidumping Policies Management Focus: U.S. Magnesium

Scope And Goals

279 words - 2 pages Introduction: Kudler Fine Foods is a specialty food store based in San Diego, California with its three locations in La Jolla, Del Mar, and Encinitas. Kudler Fine food prides itself on offering fresh and organic products that are carefully selected from local farmers and around the world. The organization has recently taken the initiative to start a Frequent Shopper Program to market and increase sales. This program will offer the customers a

Meerkat

251 words - 2 pages Meerkat The meerkat or suricate, Suricata suricatta, is a small mammal belonging to the mongoose family. Meerkats live in all parts of theKalahari Desert in Botswana, in much of the Namib Desert in Namibia and southwestern Angola, and in South Africa. A group of meerkats is called a "mob", "gang" or "clan". A meerkat clan often contains about 20 meerkats, but some super-families have 50 or more members. In captivity, meerkats have an average

Similar Documents

Mgt216 Essay

714 words - 3 pages The first ethical issue presented in the ethics game simulation was whether to warn consumers about the contaminated product and what information to provide consumers about the contaminant. The second ethical issue was whether to sell a product that does not meet U.S. safety requirements in a foreign market that has lower safety restrictions. G-BioSport was not required to meet prior approval from the Federal Drug Administration before they

Economy Effect Of Marijuana Essay

277 words - 2 pages Modern American History by Alan Renga 2nd Mid Term! You will be given 3 Short Essay questions and 20 Multiple Choice questions deriving from this list! 80 points total! The 1920s Warren Harding then Calvin Coolidge Tea Pot Dome 1st Red Scare Immigration Restriction, Sacco and Vanzetti Langston Hughes, Marcus Garvey, KKK Prosperity, advertising Prohibition, Al Capone Flappers, Clara Bow, Rudolph Valentino Babe Ruth, Jack Dempsey

The Vc Shakeout Essay

2033 words - 9 pages ECONOMY 26 Luring a big firm to town is not the secret to job growth DEFEND YOUR RESEARCH 30 Are morning people wired for success? VISION STATEMENT 32 The social web’s east-west divide COLUMN 38 Warren Bennis looks back on his surprising path to fame New Thinking, Research in Progress hbr.org New Thinking, Research in Progress hbr.org FIRST The VC Shakeout Venture capital hasn’t worked for a decade and must be radically

Hospitals Paper

6014 words - 25 pages I hope to provide in this paper a comprehensive understanding for what the term “hospital” has become. Hospitals are an extremely complex system that man has created and shaped and reshaped throughout history. My goal in writing and researching this paper will be to provide those who read it a clear understanding on how the hospital system got to where it is today, and to shed some light on the many organizations that affiliate with and