biol 1202 chapter 41 - Animal Nutrition Chapter 41 Concept...

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Animal Nutrition Animal Nutrition Chapter 41 Chapter 41
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Concept 41.1: An Animal’s diet must supply chemical energy, organic molecules, and essential nutrients Chemical energy, organic molecules mostly supplied by carbohydrates, proteins, & lipids Other nutrients include vitamins and minerals
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Essential Nutrients Essential amino acids are ones that animals can’t make. Must come from the diet. Animals require 20 amino acids Essential fatty acids are required in the diet Usually unsaturated fatty acids Figure 41.2
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Vitamins Vitamins are organic molecules Serve as antioxidants and coenzymes
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Mineral s Minerals are inorganic elements or compounds in the diet
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Which of the following vitamins can be stored in the bodies of animals? 1. vitamin C 2. vitamin B1 3. niacin 4. vitamin E
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Which of the following vitamins can be stored in the bodies of animals? 1. vitamin C 2. vitamin B1 3. niacin 4. vitamin E
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Concept 41.2: The main stages of food processing are ingestion, digestion, absorption, and elimination
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Four Stages of Food Processing Ingestion: food brought in through the mouth Digestion: Mechanical breakdown: physical breakdown of food Chemical breakdown: digestive chemicals & enzymes breakdown food Absorption: small subunits transported out of digestive system Elimination: indigestible material expelled from body Figure 41.7
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Digestion in a Tube is Most Efficient Alimentary canal: complete digestive tract that has digestive tube with a mouth and anus Digestive tube can be organized into specialized regions Allows animals to eat more frequently Figure 41.9
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Concept 41.3: Organs specialized for sequential stages of food processing form the mammalian digestive system
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