Essay On Yeast Metabolism

Jakob Wenman

Lab 7: Yeast Metabolism

BIOL 1220

Section: 001

3/11/14

TA: Paul Williams

Introduction:

Yeasts are able to convert carbon sources, like sugars, into ethanol, without air. Yeasts also change sugars into carbon dioxide and water, when air is present (Leady. 2014). When cellular respiration requires oxygen, it is known as aerobic cellular respiration (Leady. 2014). Carbon counts are important because they give the number of carbons in monosaccharide molecules. Glucose has a carbon count of six. Fructose has a carbon count of six. Sucrose has a carbon count of twelve (Leady. 2014).

Question: Which form of yeast will produce the highest amount of gas?

Hypothesis: Yeast metabolizes simple carbohydrates than it does complex carbohydrates.

Prediction: I predict that Fructose, Glucose, and Sucrose will produce more gas than Starch.

Methods:

The methods used for this lab came from Leady, B. (2014) Fundamentals of Life Science Lab Manual. Toledo, Ohio: University of Toledo. No changes were made.

Results:

At the end of the 30 minute time period, the starch solution ...