BIOCHEM 2EE3 Lecture Notes - Lecture 12: Beta Oxidation, Exercise Intensity, Homeostasis
21 Apr 2018
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Document Summary
We consume food to provide fuel to our body to synthesize energy in the form of atp. Our cells need energy for many housekeeping activities such as dna replication, cell division, protein synthesis, maintaining an osmotic gradient of sodium and potassium ions. 3 macronutrients provide fuel to our cells for energy production: carbohydrates- includes polysaccharides like starch that are broken down to glucose, lipids, proteins. Brain prefers glucose but under conditions of starvation or fasting it uses ketone bodies. At rest muscle likes to burn fatty acids but during exercise it will switch over to burning. The heart is always pumping never at (cid:494)rest(cid:495) in the same way skeletal muscle is, and therefore prefers to get its fuel from the constant steady flow of fatty acids which are a rich source of energy. Adipose tissue burns fatty acids (that is its speciality) Liver burns all three macronutrients to produce energy.
