Introduction to Cellular Respiration

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The chemical reactions in the body's cells that change food into energy.

Definition:

All living things carry out cellular respiration, including bacteria. ​

​Who needs CR?

Cellular Respiration breaks down food like glucose to produce energy in the form of ATP.

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​What inputs are needed for this reaction?

We breath in air to obtain Oxygen (O₂). We also consume​ food which is broken down in the digestive system into small molecules that can enter cells. Glucose is the molecule we will focus on.

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O₂ + Glucose --> _______​

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​What outputs are made in the reaction?

​ATP is the main product of Cellular Respiration. Cells can't use glucose or heat to fuel cellular and body processes. They need an energy source they recognize and know how to use, ATP. CO₂ and H₂O are waste products also produced.​

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O₂ + Glucose --> ATP + CO2 + H₂0

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​Formula for C.R.

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​Cellular respiration occurs in mitochondria of cells, the

powerhouse.

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​Glucose is a basic unit of carbohydrates.

Examples of carbohydrates include table sugar and starch.​

Short for adenosine triphosphate, a nucleic acid with 3 phosphate groups.

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A usable energy source for cells.

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Energy is stored in the bonds of the compound.​

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​ATP = Energy

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