01:119:116 Lecture Notes - Lecture 23: Heterotroph, Histidine, Chemical Energy
23 Apr 2016
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Document Summary
Nutrition = food taken into body, broken apart, and used by body. Animals are heterotrophs and fall into 3 categories. Herbivores feed directly on producers mainly plants and algae. Carnivores = meat-eaters consumer herbivores and other carnivores. Adequate nutrition includes eating the right amount of food and right mixture of foods. An animal"s diet must provide e to produce atp which powers cellular processes and activities. Nutritionists measure energy value of food in calories. Definition of calorie = amount of heat required to raise the temperature of 1 kg of water by 1 degree centigrade. Tend to be ingested in form of starch or cellulose (long chains of glucose) Principle sources of energy in human diet provide 50% of. Most lipids in our diets are triacylglycerol (triglycerides) = glycerol + 3 fatty acids. This nutritional need must be satisfied by diet. Animals must obtain two types of organic precursors to build its own macromolec.
