Physiology 2130 Lecture 16: Module 16 – Metabolism
19 Feb 2017
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Document Summary
The fats, carbohydrates and proteins are used for energy or to build structure. Metabolism: chemical changes that occur within a cell to either manufacture energy, store energy or build new cell structures. Adenosine triphosphate (atp): energy molecule used by the body. Anabolism: creation of large molecules from small ones with the use of energy (atp) Catabolism: breakdown of large molecules into small ones resulting in the release of energy (atp) Food is made up of smaller building blocks: these larger molecules are broken down in the digestive tract then absorbed, once in the body, some may partially reform while others stay as building blocks. Triglycerides make up most of the fat found in the body and consist of 3 fatty acid chains attached to one molecule of glycerol. Proteins consist of long chains of amino acids linked together. Carbohydrates are long chains of monosaccharides (like glucose) joined together.
