Biology 2601A/B Lecture Notes - Lecture 15: Cecum, Bile Acid, Rumen

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Food in: top of arrow - antarctic field shop. Food gets processes to turn into: atp to run cellular processes, or used as storage. Food: think of food as inefficiently packaged nutrient molecules, our cells run on atp, not on big macs, the cells themselves use fuel to make atp, a bunch of food is not digested/absorbed at all. Food is broken into smaller bits for use in animals: lipids - fatty acids, carbs - simple sugars, proteins - amino acids, these are the units that get absorbed into the animal. Some are absorbed as is (not broken down at all: micronutrients such as vitamins and minerals, we cant form these ourselves. 3 different diets that have different requirements of digestion. Sun bird - live on a diet of simple sugars: disaccharides, can use it to directly fuel cellular metabolism.

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