Cellular Respiration - Essay Example

Comments (1) Cite this document
Summary
However, the process of generating energy during cellular respiration is not as simple as the equation looks. Cellular respiration can be defined as a process of oxidizing fuel molecules such as glucose to carbon dioxide and water. The energy released during this process is held in the ATP molecules for all the energy consuming activities of the cell…
Download full paperFile format: .doc, available for editing
GRAB THE BEST PAPER96.9% of users find it useful
Cellular Respiration
Read TextPreview

Extract of sample "Cellular Respiration"

Download file to see previous pages ATP is called as a "Universal energy currency" since all the energy transactions of the cell use this molecule.
In terms of efficiency, aerobic respiration is more efficient than the anaerobic respiration which yields only two molecules of ATP. Both these modes of respiration share the initial Glycolysis step, which occurs in cytoplasm. After, the glycolysis, other reactions of the aerobic respiration, Krebs (Citric acid cycle) and oxidative phosphorylation takes place in mitochondria.
Of the four different isozymes, type IV enzyme is not amenable to feedback inhibitory mechanism and is specific to liver and pancreas. During elevated levels of blood glucose, excess amount of Glucose-6-phosphate is made for conversion to glycogen for future use in liver (Table 1).
2. The second reaction of this cascade is catalyzed by phosphoglucose isomerase leading to interconversion of glucose-6-phosphate to fructose-6-phosphate during glycolysis and gluconeogenesis (Table 1).
3. Third step in the glycolysis in another priming reaction leading to the addition of another phosphate group by an enzyme called phosphofructokinase 1. This is a unidirectional reaction committing the cells to glycolysis. A phosphatase called fructose bisphosphatase is required for the reverse reaction. A balance of enzymatic activities of phosphofructokinase and fructose bisphosphatase determines whether the reaction proceeds towards glycolysis or gluconeogenesis. This reaction is activated by AMP and also fructose 2,6-bisphosphate which is a product of the reaction catalyzed by phosphofructokinase 2. These enzymes are downregulated by glucagon at the transcriptional level. Fructose bisphosphatase is inhibited by fructose 2,6 bisphosphate (Table 1).
4. The fourth step in the process of glycolysis is the reversible cleavage of fructose 1,6 bisphosphate to form two different triose phosphates, both of which continue through glycolysis, by an enzyme termed aldolase. The different isozymes of aldolase have different catalytic functions: aldolases A and C are mainly involved in glycolysis, while aldolase B ...Download file to see next pagesRead More
Cite this document
  • APA
  • MLA
  • CHICAGO
(“Cellular Respiration Essay Example | Topics and Well Written Essays - 2250 words”, n.d.)
Retrieved from https://studentshare.org/miscellaneous/1504684-cellular-respiration
(Cellular Respiration Essay Example | Topics and Well Written Essays - 2250 Words)
https://studentshare.org/miscellaneous/1504684-cellular-respiration.
“Cellular Respiration Essay Example | Topics and Well Written Essays - 2250 Words”, n.d. https://studentshare.org/miscellaneous/1504684-cellular-respiration.
  • Cited: 0 times
Comments (1)
Click to create a comment or rate a document
ry
ryanloma added comment 3 months ago
Student rated this paper as
I had an issue with a essay types of works. All until I came across this website and this particular essay. Even though "Cellular Respiration" is far from my interests, the structure is so great that I use it all the time as an example for my own works.

CHECK THESE SAMPLES OF Cellular Respiration

Cellular respiration and photosynthesis

...?Arbitrary relocation of molecules from the region of higher denseness to lower is known as diffusion. Osmosis is the phenomenon in which the water molecules' moves as per potential gradient across a semi permeable membrane (membrane which allows only particular molecules to go through it). Nutritions are transformed into operational energy by a biochemical process cellular respiration and electron transport. Electron transport is the procedure which pairs transfer in a midst NADH and O2 with the transfer of protons across a membrane. Due to electron transport phenomena, potential gradient is substantiated, which is used to derived adenosine triphosphate (ATP). Traversing of protons across the membrane of...
1 Pages(250 words)Assignment

Aerobic Cellular Respiration in Isolated Mitochondria of Lima Bean Seeds

...? Investigating the Aerobic Cellular Respiration in Isolated Mitochondria of Lima bean (Phaseolus lunatus) seeds during the Conversion of Succinate to Fumarate in Krebs cycle Introduction: A basic concept in cellular respiration is the transfer of chemical energy (electrons) from an electron donor (i.e. carbohydrate, proteins and fat from food molecules) to an electron acceptor. Most of the organisms use oxygen as the final electron acceptor although some organisms (eg. Yeast) use other alternatives. During aerobic respiration, oxygen in the air is used as the final electron receptor which subsequently gets reduced to water. Energy is generated during this process in the form of a high energy molecule, adenosine triphosphate (ATP... ). This...
6 Pages(1500 words)Lab Report

Cellular Respiration and Fermentation

...the energy from the pyruvic acid molecules was broken down at the Krebs cycle. Electron transport and oxidative phosphorylation involved the organization of a proton gradient across the NADH membrane generated at the Krebs cycle. ATP synthesis then took place through the ATP synthesis enzyme – in creating the phosporylation of ADP. The electrons were lastly moved to oxygen, where water was produced (Berg et al. 54). Conclusion Cellular respiration is an important process, as it is the process that leads to the formation of ethanol, which is an important ingredient in the manufacturing of alcohol. The process is also necessary in baking, as it allows for the raising of bread, through the generation of...
3 Pages(750 words)Essay

Cellular Respiration and Photosynthesis

...?Cellular Respiration and Photosynthesis- Important Concepts, Common Misconceptions, and Learning Activities: A Review One of the fundamental processes that sustain life is the process of capturing energy from the environment. Here on Earth, the main source of energy is the sun. Through photosynthesis, plants, animals and other photosynthetic organisms can capture the energy from the sun and store it inside their energy carriers. These carriers care the ATP (adenosine triphosphate) and sugars in the forms of chemical bonds. The release of oxygen into our environment and the chemical splitting of water results from the chemical reaction during photosynthesis. All organisms that are doing photosynthesis...
3 Pages(750 words)Essay

Cellular respiration and fermentation

...Cellular Respiration and Fermentation Table of Contents Abstract 2 Paper Proper 2 Introduction 2 Materials and Methods 2 Results 4 Conclusions 4 References 8 Abstract The two-part experiment involved tracking fermentation and respiration processes making use of carbon dioxide markers in gas height and in the production of carbonic acid respectively (ASPB Foundation n.d.; Nuffield Foundation 2013; The Regents of the University of California 2011).. Paper Proper Introduction The goal of the experiment is to investigate respiration and fermentation reactions. Studying fermentation and respiration as done in this experiment has implications for industry, as fermentation reactions, for one, impact the way we produce an important... ...
5 Pages(1250 words)Lab Report

Statement of purpose study abroad (USA)

2 Pages(500 words)Essay

History

4 Pages(1000 words)Essay

Cellular Respiration

... Cellular Respiration Questions Section A Anaerobic respiration as well as in fermentation of carbon dioxide is used while oxygen is released while in aerobic respiration oxygen is used and carbon dioxide is released 2. Anaerobic metabolism is more energy efficient because it helps in consuming the less useful carbon dioxide gas from the atmosphere. Anaerobic respiration can cause suffocation 3. Two ATP are produced at glycolysis stage a process known as substrate-level phosphorylation 4. When fermentation occurs in a sealed container, it means that there is no supply of oxygen and the process will be anaerobic. The substance produced under this condition is the lactic acid that traps the bubbles. 5. Fermentation is more than... . As...
1 Pages(250 words)Essay

Cellular respiration and fermentation

...Cellular Respiration and Fermentation Table of Contents I. 3 II. Narrative 3 Introduction 3 2. Materials and Methods 3 3. Results 4 4. Conclusions 5 References 8 I. Abstract The two-part experiment involved tracking fermentation and respiration processes making use of carbon dioxide markers in gas height and in the production of carbonic acid respectively (ASPB Foundation n.d.; Nuffield Foundation 2013; The Regents of the University of California 2011).. II. Narrative 1. Introduction In the first part, fermentation is measured using gas height as proxy for carbon dioxide measure and the rate of reaction. In the second part, respiration is measured in terms of carbonic...
4 Pages(1000 words)Lab Report

Nacl and cellular respiration

... Why sodium chloride (NaCl) has no effect on cellular respiration Cellular respiration is the process by which food molecules like glucose are being oxidized to produce carbon dioxide and molecules of water. The energy released during the breakdown process is in the form of ATP, which is used in cellular activities. The process occurs in all organisms (Meldrum 22). C6H12O6 + 6O2 + 6H2O → 12H2O + 6 CO2 NaCl has no effect on the process of cellular respiration because of the following reasons; NaCl has no effect on temperature availability. Respiration rate is high in warm temperatures than in cold environment regardless of salt availability. This is because the effect of temperature is controlled by the activity of enzymes. Warm... from...
1 Pages(250 words)Coursework
sponsored ads
We use cookies to create the best experience for you. Keep on browsing if you are OK with that, or find out how to manage cookies.

Let us find you another Essay on topic Cellular Respiration for FREE!

Contact Us