NTDT200 Lecture Notes - Lecture 13: Blood Sugar, Inner Membrane, Riboflavin
12 May 2016
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Energy (capacity to do work: heat, mechanical, electrical, and chemical (stored in foods and body) Metabolism (sum of all chemical reactions that go on in living cells: how the body uses foods to meet its needs. Energy metabolism: how body obtains and uses energy from food. Photosynthesis: process by which green plants use suns energy to make carbohydrates from carbon dioxide and water. Anabolism: building body compounds: requires energy, when simple compound becomes more complex. Catabolism: breaking down body compounds: releases energy, ex: glycogen to glucose break down. Atp: adenosine triphosphate: released during breakdown of glucose, fatty acids, and amino acids. Form of phosphate groups: negative charge vulnerable to hydrolysis. Provides energy for all cell activities: coupled reactions, efficiency: body converts chemical energy of food to energy of atp with 50% efficiency, heat loss. Coenzymes: organic, associate with enzymes, without coenzyme, an enzyme cannot function. Digestion: carbohydrates glucose (and other monosaccharides)
