In cellular respiration, there are anaerobic and aerobic processes.

The product of this process is energy in the form of ATP (Adenosine Triphosphate), by substrate-level phosphorylation, NADH and FADH2.

Anaerobic and aerobic respiration share the initial pathway of glycolysis but aerobic metabolism continues with the Krebs cycle and oxidative phosphorylation.

Anaerobic respiration, in case of yeast cells, is commonly referred to as fermentation.

A lot of my college students still have trouble with this one. The reactions that happen in respiration and photosynthesis are different, but if we just look at what goes in and what comes out, they're opposites.

Here's photosynthesis:
Carbon dioxide (CO2) and Water (H20) in, Oxygen and Sugar out.
Requires energy from the sun.

Here's cellular respiration:
Oxygen and Sugar in, CO2 and H20 out. Releases energy from the sugar.

Plants can do both. When they have light, they use it as an energy source to put the pieces of CO2 and H2O to make sugar. They can put a bunch of sugars together to make starch (what foods are starchy?), cellulose (the stringy stuff you can't chew up), and wood.

When it's dark, they can do cellular respiration to break down the starch and sugar to release the energy they need.

Poor animals, we can only do cellular respiration. We need foods like starch, and oxygen, and we breathe out the CO2 that's made. We don't get enough water from the process to take care of all of our needs so we have to drink more. Kangaroo rats don't have to drink water. They conserve water a lot better than we do.

Can plants live without animals? Can animals live without plants?
Thanks for asking.


Difference Between Aerobic and Anaerobic Cellular Respiration

In anaerobic respiration, the end products are ethyl alcohol or lactic acid, and carbon dioxide.

Nealson KH and Saffarini DA (1994) Iron and manganese in anaerobic respiration: environmental significance, physiology, and regulation. Annual Review of Microbiology 48: 311–343.


Cell Processes: Photosynthesis & Cellular Respiration

3) Define Fermentation: An anaerobic catabolic process consistingof internally balanced redox reactions, in which organic molecules serveas both electron donors and electron acceptors.

You need to know how photosynthesis and cellular respiration ..

The post glycolytic reactions take place in the mitochondria in eukaryotic cells, and in the cytoplasm in prokaryotic cells.

Fermentation in anaerobic respiration

Without oxygen, pyruvate is not metabolized by cellular respiration but undergoes a process of fermentation.

Cellular Respiration & Photosynthesis Lesson Plans: ATP

Anaerobic respiration is less efficient at using the energy from glucose since 2 ATP are produced during anaerobic respiration per glucose, compared to the 36 ATP per glucose produced by aerobic respiration.

Photosynthesis & Cellular Respiration Puzzle Review

Anaerobic respiration processes are involved in a wide range of reactions involving oxidized ions of metals (iron, manganese, chromium, uranium and others) and metalloids (arsenic, selenium).

Photosynthesis & Cellular Respiration, Aerobic, Anaerobic, ..

Bryant DA, Liu Z, Li T et al. (2012) Comparative and functional genomics of anoxygenic green bacteria from the taxa Chlorobi, Chloroflexi, and Acidobacteria. In: Burnap RL and Vermaas WFJ (eds) Functional Genomics and Evolution of Photosynthetitic Systems, Advances in Photosynthesis and Respiration vol. 33, pp. 47–102. New York: Springer.