What happens during cellular respiration?

Answer 1

Short Answer:

In cellular respiration Oxygen and Glucose, or C6H12O6, are broken down and used to produce ATP, adenosine triphosphate, CO2, and water.

Long Answer:

Glycolysis -> Kreb's Cycle -> Electron Transport Chain -> Chemiosmosis

Glycolysis: Glucose + 2 ATP -> 2 Pyruvate + 4 ATP+2 NADH

Glucose is ingested by the organism and brought into the cell through active transport. The Glucose molecule is phosphorylated, that is a phospate group is attached to both ends, and pulled apart. The phosphate group is then detatched from the split glucose and attached to ADP by an enzyme, forming ATP and Pyruvate.

Kreb's Cycle: 2 Pyruvate+ 2 H2O -> 8 NADH + 2 FADH2 + 2 ATP + 4 CO2

Pyruvate is oxydized to form Acytl-CoA which is inserted into the Kreb's Cycle. This action produces 2 NADH molecules. When in the Kreb's Cycle, the Acytl-CoA is changed, removing 2 Carbon atoms in the form of CO2, and generating 1 ATP for each pyruvate that entered the cycle. Hydrogen atoms are removed during this cycle and attached to the electron carriers NAD and FAD for use in the Electron transport Chain.

Electron Tranasport Chain and Chemiosmosis: 10 NADH + 2 FADH2 + 3 O2 -> 34 ATP + 6 H2O

NADH and FADH2 are put through a series of enzymes where the Hydrogen atoms are removed to form an Electron Gradient. This gradient drives movement through a proton 'pump' that produces energy from the flow of the atoms. Each NADH that enters the ETC will produce 3 ATP molecules. Each FADH2 will produce 2 ATP.

This answer is not exhaustive. For the full process, including all of the enzymes utilized, please talk to a Biology professor or look into the purchase of a molecular biology text.

Answer 2

During cellular respiration the Glucose is broken down.

It may be in either of two processes- Aerobic respiration and anaerobic respiration.

In Aerobic respiration there is break down of glucose in CO2 and H2O along with energy in presence of O2. This can be shown in following reaction

C6H12O6 + O2 --------> CO2 + H2O + Energy

And in anaerobic respiration glucose is broken down in any alcohol.

Answer 3

During cellular respiration, cells break down glucose and other organic molecules in the presence of oxygen to produce energy in the form of ATP. This process occurs in multiple stages, including glycolysis, the citric acid cycle, and oxidative phosphorylation. Carbon dioxide and water are byproducts of cellular respiration.

Answer 4

Cells make a form of energy called ATP that makes glucose

The cells break down simple food molecles such as sugar and release the energy that the cells contain