Yeast fermentation and starch synthesis are some of the processes that demonstrate how energy is made or store depending on the environment the cell is exposed to in the form of ATP to be able to support their cellular processes. In fermentation, an anabolic process is involved. An anabolic process is a type of metabolic process in which large molecules are broken down into smaller ones and require an input of energy for it to occur known as an endergonic process. In the fermentation of the starch lab, the substrate glucose was broken down into two pyruvate-requiring two ATP molecules to be used- and was then reduced to lactic acid. In addition, fermentation occurs in cells where there is an absence of oxygen and the small amount of ATP made serves to allow muscle contraction. Moreover, in fermentation, glycolysis does not halt because NAD+ is recycled so it can continue to be an electron carrier in glycolysis. However, in cellular respiration, the electron transport chain cannot continue to operate in the absence of oxygen because there is no oxygen at the end of the electron transport chain to accept the electron that pass through and the electrons stay where they are, thus, preventing the creation of ATP. In the electron transport chain, …show more content…
In Yeast fermentation, ATP is used to make two G3P molecules from the breakdown of glucose which will then be used to make two pyruvate and yield two ATP molecules while in starch synthesis, ATP is also used for cellular processes but is also stored as a long term energy storage in the form of starch used mostly by plants. Another similarity between yeast fermentation and starch synthesis are that both used glucose-a monosaccharide- as their substrates. In starch synthesis, polymers of glucose are form and create the final product, starch. On the other hand, yeast fermentation uses glucose to make