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Aerobic and Anaerobic Respiration in Yeast Cells

Aerobic and Anaerobic Respiration in Yeast Cells

The...Yeastiest way to produce energy?
Dave Phillipich
February 28, 2001
Dr. Krufka  MWF 1:30-3:30 Lab

Living organisms catabolize organic molecules within their cells and use the energy released to manufacture ATP by phosphorylating ADP.  Many prokaryotes and virtually all Eukaryotes phosphorylate ADP either through fermentation (anaerobic) or respiration (aerobic). Both of these processes involve oxidation of foodstuffs, yet only the latter requires oxygen. 
	Got that?  Didn’t think so.  Cellular respiration is a very complex process that consists of many steps that take place inside the cell, in an organelle called a mitochondrion.  Mitochondria are responsible for converting digested nutrients into the energy-yielding molecule adenosine triphosphate (ATP) to fuel the cell's activities. This function, known as aerobic respiration, is the reason mitochondria are frequently referred to as the powerhouse of the cell. 	There are two types of respiration that occur in cells to produce energy.  When oxygen is available in the cell, aerobic respiration, as mentioned previously, occurs.  When oxygen is not readily available, the process of anaerobic respiration occurs.  Aerobic respiration is highly favorable to humans and animals because we require large amounts of energy to function properly.  Respiration in the presence of oxygen makes

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