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2007_EXAM_1_with_key - ANS 313 Take-Home Exam 1 Name Lab...

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ANS 313 Take-Home Exam 1. Name: _______________________________ Lab group code: ______ DUE Monday 9/17 at 8:00 AM before lecture. First 40 questions must be on a scantron sheet. Answers to 41-46 must be spelled correctly and easy to read. Turn in only one essay (question 47) per group. 100 points. 1. How much energy is used to increase 1.0 g of water from 14.5 ° C to 15.5 ° C? a. 1.0 calorie b. 1.0 kcal c. 1.0 Calorie d. 10 calories 2. Sphingomyelin is a: 3. This carbohydrate-like compound is found in the exoskeletons of many organisms. Although we don’t think of it as digestible, animals with effective fermentation compartments can digest it and obtain energy from it. a. cholesterol b. phytate c. chitin d. molluskin 4. Name the essential fatty acid that has 18 carbons and 2 double bonds. 5. Why is fat the major storage form of energy for animals but plants often use carbohydrate? 6. A bomb calorimeter is used to determine the gross energy content of feed. On average, how much gross energy does fat contain (see Table 10.1)? a. 9.5 kcal/kg b. 9.0 kcal/g c. 9.5 kcal/g d. 9.0 kcal/kg 7. This Danish scientist developed the standard method for N analysis more than 100 years ago. 8. All absorbed nutrients except fats must pass through this organ before being partitioned throughout the body. 9. In nutrient partitioning, which body process is always given greatest priority for nutrients? 10. This laboratory measurement does the best job of estimating the % cell wall carbohydrate in a feed. a. NFC b. NRC c. CF d. NDF e. ADF 11. Trying out a new feed for her Haflingers, Chelsea measures their feed intake at 4.0 kg of dry matter/head/day and fecal output at 1.0 kg of dry matter/head/day. What did she determine?
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