Can anyone help me with the differences and similarities between cellular respiration and fermentation?
I know one similarity is that both use the process of glycolysis. And NAD+ is recycled through both processes.
Can anyone help me with some more?
Since this is not my area of expertise, I searched Google under the key words "'cellular respiration' fermentation compare contrast" to get these possible sources:
http://www.pc.vccs.edu/biology-labmanual/lab6cellresp/cellrespiration.htm
http://biology.clc.uc.edu/Courses/bio104/cellresp.htm
http://trc.troup.k12.ga.us/photosynthesis.pdf
In the future, you can find the information you desire more quickly, if you use appropriate key words to do your own search.
I hope this helps. Thanks for asking.
Certainly! I can help you with more differences and similarities between cellular respiration and fermentation.
Similarities:
1. Both cellular respiration and fermentation are metabolic processes that occur in cells to generate energy.
2. Both processes begin with the breakdown of glucose through glycolysis.
3. Both processes involve the transfer of electrons and the production of ATP (adenosine triphosphate).
4. In both processes, NAD+ is initially reduced to NADH.
Differences:
1. Cellular respiration: In cellular respiration, after glycolysis, the process continues either aerobically (with oxygen) or anaerobically (without oxygen).
- In aerobic respiration, the breakdown of glucose is completed through the Krebs cycle and the electron transport chain, which occur in the mitochondria. The end products are CO2 and a large amount of ATP.
- In anaerobic respiration, only glycolysis occurs, followed by fermentation. Fermentation generates ATP without the involvement of oxygen.
2. Fermentation: In fermentation, after glycolysis, the process continues without oxygen.
- Fermentation occurs in the cytoplasm and involves the regeneration of NAD+ to allow glycolysis to continue in the absence of oxygen.
- Different types of fermentation exist, such as alcoholic fermentation (found in yeast) that produces ethanol and CO2, and lactic acid fermentation (found in some bacteria and our muscle cells) that produces lactic acid.
3. Energy production: Cellular respiration produces a significantly larger amount of ATP compared to fermentation.
- Aerobic respiration produces approximately 36-38 ATP molecules per glucose molecule.
- Anaerobic respiration produces only 2 ATP molecules per glucose molecule, while fermentation produces even fewer ATP molecules (2 ATP in lactic acid fermentation and none in alcoholic fermentation).
4. End products: In cellular respiration, the end products are primarily CO2 and H2O. In fermentation, the end products depend on the type of fermentation (e.g., ethanol and CO2 in alcoholic fermentation, lactic acid in lactic acid fermentation).
To summarize, while both cellular respiration and fermentation begin with glycolysis and involve the transfer of electrons and recycling of NAD+, they differ in the presence/absence of oxygen, location, amount of ATP produced, and the end products generated.