What is the process that release energy when oxygen is insufficient?

Answer 1

ANAEROBIC RESPIRATION is how the cells produce ATP when no oxygen is present:

Anaerobic (fermentation) vs. Aerobic Respiration

i. Without oxygen to accept electrons in the electron transport chain, most of cellular respiration stops.

ii. Fermentation enables some cells to produce ATP in the absence of oxygen.

iii. In glycolysis, glucose is oxidized to two pyruvate molecules with NAD+ being reduced to NADH.

iv. Pyruvate then accepts electrons from NADH, oxidizing it back to NAD+. The NAD+ is then available to oxidize more glucose.

v. Because the pyruvate does not enter the Krebs cycle, there is still a lot of energy which is not removed from the fuel. This is evident in yeast fermentation where the end product is alcohol - a high energy fuel.

vi. Human muscle cells switch from aerobic respiration to lactic acid fermentation to generate ATP when O2 is scarce. When O2 is absent, the ETC stops; therefore pyruvate accepts electrons, forming lactic acid. This waste product causes muscle fatigue and cramping, but it is eventually converted back to pyruvate in the liver.

vii. Under aerobic respiration, a molecule of glucose yields 36-38 ATP, but the same molecule of glucose yields only 2 ATP under anaerobic respiration.

Hope this helps. it is a section out of my Biology notes. If it doesnt, Google Anaerobic respiration and wiki will give you a good answer

Answer 2

The anaerobic metabolism that some organisms use to produce energy from glucose is called: "anaerobic glycolysis" or fermentation. The products of this metabolism are ATP and alcohol (e.g., in yeasts and bacteria) or lactate (in mammals). However, anaerobic metabolism is very inefficient because if we compare aerobic glycolysis that produces 32 ATP per molecule of glucose, anaerobic glycolysis only produces 2 ATP molecules per one glucose.

Answer 3

you mom, and dont cheat on your homework...

Answer 4

when theres not enough oxygen present, fermentation occurs

Answer 5

Fermentation