Chapter_41_Nutrition

Chapter_41_Nutrition - Animal Nutrition-Animals are...

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Animal Nutrition -Animals are heterotrophs requiring food for fuel, carbon skeletons, and essential nutrients. They obtain food from oxidation of organic molecules such as fats and glucose. Animals have basic animal requirements that are needed to maintain in order to sustain life. When animals intake more calories than they consume the excess is stored as glycogen. Humans store calories in the liver and muscle cells. Stores of Liver glycogen are used up first then the glycogen in muscle/fat cells. There are two extremes of nutritional states. Undernourishment causes the body to break down its own proteins (muscles brain protein deficient). It also causes the Human body to horde fat. Overnutrition is known as obesity. Intracellular Digestion: Food vacuoles use enzymes to break down food. Food vacuoles are the simplest digestive compartments. Food vacuoles attach to lysosomes, which digest the food using hydrolytic enzymes. This is called intracellular digestion ESSENTIAL NUTRIENTS Animals food they consume must supply essential nutrients. Essential nutrients have 4 classes. ESSENTIAL AMINO ACID : Animals need 20 different amino acids to make proteins. EAA must be found prefabricated in the food they consume. Protein deficiency is without all amino acids. Sources include eggs, cheese, meat, and other animal products. The body cannot store amino acids so all amino acids need to be consumed
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This note was uploaded on 04/01/2012 for the course BIO 141 taught by Professor Dr.cafferty during the Spring '11 term at Emory.

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Chapter_41_Nutrition - Animal Nutrition-Animals are...

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