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# ATP

Cells store energy with ATP, or Adenosine Triphosphate. The ATP consists of two parts, the adenosine, which is an adenine (a nucleotide, top right), connected to a ribose sugar. The triphosphate consists of three phosphate groups on the left. Those are high energy bonds, and when they're broken, they release energy.

# ATP Hydrolysis

When combined with water, in a process known as hydrolysis, ATP releases energy.

MathJax TeX Test Page $$\text{ATP} + \text{H}_2\text{O} \rightarrow \text{ADP} + \text{P}$$ The above reaction is an exogenic reaction, meaning it releases energy. The free energy change, or $\Delta{}$G = -30.5kJ/mol, which means it releases a lot of energy.

# Cellular Respiration

This is how the cell makes ATP. It is able to make up to 38 ATP per glucose molecule. This is made up of three part

## Glycolysis

This is an anaerobic process, meaning it doesn't require oxygen. This results in a net production of 2 ATP.

### Fermentation

This happens when there is no oxygen, otherwise it goes on to the Krebs Cycle.

## Krebs Cycle

This is an aerobic process, meaning it requires oxygen, and this results in 2 ATP.

## Electron Transport Chain

This is also an aerobic process, and it makes up most of the ATP created. This results in up to 34 ATP.

Note: There will be 3 new posts that go in depth into all 3 of the parts of cellular respiration.

David Witten