Difference Between Aerobic & Anaerobic Respiration (Coursework Sample)
You are to answer all questions fully. Any reference material you used should be noted. That would be the textbook chapter and page(s), your notes, any URLs from sites you browsed on the internet.
I would say that most of the reference should from the textbook and notes. All the reference should be solid.
1 Using a simplified series of diagrams describe how a cell can extract 38 molecules of ATP(net)from one molecule of glucose.
The whole process of cellular respiration extracts grossly 38 ATP (and 36 net) from one molecule of glucose. The first 2 molecules of ATP are created in the process of glycolysis as the glucose is turned into pyruvate. After releasing 2 molecules of NADH, the next 6 molecules is then produced. This goes the same for the next process, which is the electron transport chain. As the byproducts go to the Krebs Cycle, 24 molecules of ATP are then produced from multiple reactants such as FADH2 and NADH.
2 What is the difference between aerobic and anaerobic respiration? How is fermentation different from both of them? Discuss two common fermentations that we use to make everyday use of products.
1 The main difference between aerobic and anaerobic respiration is that while aerobic respiration uses oxygen, the anaerobic respiration does not. This is because while the first one depends on cellular respiration, the latter one heavily utilizes the electron-transport chain in order to produce ATP. Another main difference is that aerobic respiration takes place in the mitochondria and completely breaks down glucose to produce CO2, H2O, and energy. This is not the same for anaerobic respiration that takes place in the cell's cytoplasm, thus completely failing to breakdown glucose.
In contrast to fermentation, the main difference of these processes is that while both of them starts with glycolysis, fermentation starts with alcoholic fermentation. During this process, only 2 molecules of ATP are produced because of the lack of oxygen, and as compared to the byproducts of the aerobic and anaerobic fermentation, the by-products of fermentation are organic acids, gases, and alcohol. Take for example brewing of beer and baking of bread. In order to brew beer, yeast is added to the main solution in order for the sugars to become alcohol and carbon dioxide. As for bread, the yeast added to the dough consumes the sugar and makes the solution expand giving the bread its bulk.
3 Using a diagram showing the growth curve for a bacterial organism grown in batch culture. Label the various phases and describe what is happening in each phase. How can we juggle the conditions to create a continuous culture as in a situation where we want a continuous supply of a bioproduct.
Phase: exponentialStationary PhaseDeath of Decline PhaseBacteria. Phase: exponentialStationary PhaseDeath of Decline PhaseBacteria – Population Growth Curve
* Lag phase – is the time when there is no increase in the number of living bacterial cells
* Log phase – the log phase of the exponential phase is the time when the number of bacterial cells increases rapidly. The doubling of the population per unit of time and when “the reproductive rate reaches a constant as DNA and protein
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