Category Archives: Metabolism

Cellular Respiration Essay

Answer the following questions:

Cellular respiration:

• What is cellular respiration and what are its three stages?

Cellular respiration is a way cells store food and energy, a catabolic pathway for the production of adenosine triphosphate (ATP). The cellular respiration happens in both eukaryotic and prokaryotic cells. The three stages are Glycolysis, Citric cycle, and electron transport.

• What is the role of glycolysis? Include the reactants and the products. Where does it occur?

Glycolysis splits the sugar that goes in to the cell.

Then in converts in to energy the cell need. It does not need oxygen to occur.

• What is the role of the citric acid cycle? Include the reactants….

Effect of Temperature on Lipase Essay

Theory The higher the substrate concentration the more quickly product is produced (rate of reaction increases) until enzyme saturation is reached at which time more substrate has no further effect. Enzymes such as Catalase are protein molecules which are found in living cells. They are used to speed up specific reactions in the cells. They are all very specific as each enzyme just performs one particular reaction.

Catalase is an enzyme found in food such as potato and liver. It is used for removing Hydrogen Peroxide from the cells.

Hydrogen Peroxide is the poisonous by-product of metabolism. Catalase speeds up the decomposition of Hydrogen Peroxide into water and oxygen as shown in the equations below. It is able to speed up the decomposition of….

Ap Biology Lab Essay

Explain how environmental factors affect the rate of enzyme-catalyzed reaction. Explain why catalysis activity decreased over time. 3. Introduction • An enzyme is a specific organic catalyst (substance that speeds up reaction without being used up in the experiment) in which it binds on to a specific substrate (reactant) at the active site and lowers the activation energy required to perform that reaction. Enzymes are important biologically because, for example, the human body performs certain reactions that keep us alive and most of them react at 37 degrees Celsius (body temperature.

In each of these reactions, there is an enzyme that catalyzes these reactions to lower the amount of energy needed to perform this reaction. If enzymes didn’t exist then body temperature wouldn’t….

Adenosine Triphosphate and Aerobic Respiration Essay

Comparison chart Embed this chart Aerobic Respiration Anaerobic Respiration DefinitionAerobic respiration uses oxygen. Anaerobic respiration is respiration without oxygen; the process uses a respiratory electron transport chain but does not use oxygen as the electron acceptors. Cells that use itAerobic respiration occurs in most cells. Anaerobic respiration occurs in bacteria, yeasts, some prokaryotes, erythrocytes (red blood cells), and in muscle cells.

Production of lactic acidDoes not produce lactic acidProduces lactic acid (in lactic acid fermentation but not in alcoholic fermentation) Amount of energy releasedHigh (36-38 ATP molecules)Low (2 ATP molecules) ProductsCarbon dioxide, water, ATPLactic Acid Fermentation – lactic acid, ATP Alcoholic Fermentation – ethyl alcohol, ATP, carbon dioxide Reactantsglucose, oxygenglucose Site of reactionsCytoplasm and mitochondriaCytoplasm StagesGlycolysis, Krebs cycle, Electron Transport ChainGlycolysis, Fermentation combustioncompleteincomplete Contents:….

Adenosine triphos phate Essay

Enzymes function like a lock and key. The substrate binds to the active site of the enzyme like a key into a lock. The enzyme breaks the bonds of the substrate and releases it without being consumed in the process. Substrates can also function as inhibitors, competing for the active site. (Wolfe, 2000). Sometimes one enzyme will work on one particular substrate, in other circumstances, such as with fructose, two or more enzymes work to break down a substrate so that it can be used by the body.

Fructose is first broken down into fructose 1 phosphate by the enzyme fructokinase.

Then fructose 1 phosphate is further broken down into dihydroxyacetone phosphate (DHAP) and glyceraldehyde by the enzyme aldolase b. (Hudon-Miller, 2012). At….

Adelphia Scandal Essay

Adelphia was founded in 1952 by John Rigas and his brother Gus Rigas in Coudersport, Pennsylvania with the purchase of their first cable franchise for $300.

After 20 years, the Rigas brothers incorporated their company under the name Adelphia which derived its name from a Greek word which means brothers, an apt corporate title for a business that would employ generations of the Rigas family.

Adelphia was a cable television company and built its success on a strong commitment to customer care; and because of this commitment, a glorious growth spree would follow.

By 1998, Adelphia passed the two million-customer milestone and served approximately 5.6 million cable television customers nationwide.

The company made significant strides in….