Warning: Use of undefined constant referer - assumed 'referer' (this will throw an Error in a future version of PHP) in /usr/home/essaywo/public_html/essays on line 102

Warning: Use of undefined constant host - assumed 'host' (this will throw an Error in a future version of PHP) in /usr/home/essaywo/public_html/essays on line 105

Warning: Cannot modify header information - headers already sent by (output started at /usr/home/essaywo/public_html/essays:102) in /usr/home/essaywo/public_html/essays on line 106

Warning: Cannot modify header information - headers already sent by (output started at /usr/home/essaywo/public_html/essays:102) in /usr/home/essaywo/public_html/essays on line 109
The Relationship Between Food Concentration, And Respiratory Activity - Online Term Paper

The Relationship Between Food Concentration, And Respiratory Activity



In this experiment different concentrations of sucrose were tested to determine
which leads to the most respiratory activity in yeast. Yeast is a heterotrophic
anaerobic fungus which lacks chlorophyll. Yeast is used commercially to
ferment the sugars of wheat, barley, and corn to produce alcohol, and in the
baking industry to raise or expand dough. Yeast or alcoholic fermentation is
the anaerobic process of respiration by which sugars, such as glucose and
sucrose, are converted into ethanol and carbon dioxide (CO2 ). This process is
illustrated in the following equation:
yeast C12H22O11 + H2O
---> 4 CH3CH2OH + 4 CO2
sucrose ...

Want to read the rest of this paper?
Join Essayworld today to view this entire essay
and over 50,000 other term papers

activity
would take place with 60% sucrose concentration. Since yeast fermentation
requires sucrose and water, aproximately equal proportions of both would yield
to the most respiratory activity.

Once the sucrose concentration was serially cut to the desired level,
the experimenter added 5 ml of yeast suspension to each one of the ten test
tubes.

Then, ten small test tubes were placed invertedly into each one of the
large test tubes, making sure no air bubbles remained within the small tibes.
The test tubes were left 24 hours, allowing for fermentation to take
place. But, no respiratory activity was detected.
In previous experimentation, it was found that yeast fermentation did
take place in different molasses concentrations. Since, molasses contains
large quantities of sucrose, it was assumed that different concentrations of
pure sucrose would yield similar results, when mixed with yeast. However, this
was not the case.

The probable explanation is that in order ...

Get instant access to over 50,000 essays.
Write better papers. Get better grades.


Already a member? Login


CITE THIS PAGE:

The Relationship Between Food Concentration, And Respiratory Activity. (2008, October 29). Retrieved December 23, 2024, from http://www.essayworld.com/essays/Relationship-Between-Food-Concentration-Respiratory-Activity/92226
"The Relationship Between Food Concentration, And Respiratory Activity." Essayworld.com. Essayworld.com, 29 Oct. 2008. Web. 23 Dec. 2024. <http://www.essayworld.com/essays/Relationship-Between-Food-Concentration-Respiratory-Activity/92226>
"The Relationship Between Food Concentration, And Respiratory Activity." Essayworld.com. October 29, 2008. Accessed December 23, 2024. http://www.essayworld.com/essays/Relationship-Between-Food-Concentration-Respiratory-Activity/92226.
"The Relationship Between Food Concentration, And Respiratory Activity." Essayworld.com. October 29, 2008. Accessed December 23, 2024. http://www.essayworld.com/essays/Relationship-Between-Food-Concentration-Respiratory-Activity/92226.
JOIN NOW
Join today and get instant access to this and 50,000+ other essays


PAPER DETAILS
Added: 10/29/2008 04:49:29 PM
Category: Health & Medicine
Type: Premium Paper
Words: 373
Pages: 2

Save | Report

SHARE THIS PAPER

SAVED ESSAYS
Save and find your favorite essays easier

SIMILAR ESSAYS
» The Catcher in the Rye: A Bridg...
» Women's Right To Choose Abortio...
» Rick Pitino
» Wind From A Foriegn Sky
» Christopher Columbus - American...
» Blacks Treated As Lower Class C...
» Pride And Prejudice - Character...
» My Trip To China
» Homosexuality
» Human Behaviours And Society
Copyright | Cancel | Contact Us

Copyright © 2024 Essayworld. All rights reserved