2006_Final_Exam_with_key

2006_Final_Exam_with_key - ANS 313 Final Exam. Dec 11, 2006...

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ANS 313 Final Exam. Dec 11, 2006 Name: _______________________________ Lab group code: ______ Page 1 of 8 Write neatly and spell correctly. 150 points. 1.5 points per question. Complete scantron sheet for questions 1-67. Be sure to sign your name and lab code on the last page and turn in separately. 1. T F Food labels often now include information about trans fats. This is useful because trans fatty acids reduce the risk of diabetes, cancer, and heart disease. 2. T F When seals are plentiful, polar bears eat mostly blubber and almost no muscle. The primary fuel source for red blood cells would be fatty acids. 3. T F One reason cows continue to produce lots of milk in cold weather, but often produce less in hot weather, is that they tend to eat more when it gets cold but eat less when it gets hot. 4. T F As feed intake and the rate of digesta flow increases, the DE value of a feed will also increase. 5. T F To promote maximum feed intake in pigs, make sure their environment is comfortable and free of stress. 6. T F If a feed tag says “Maximum crude fiber = 11%”, you can assume that the feed is probably 11% crude fiber. 7. T F As the birds in our class project demonstrated, the efficiency of capturing and retaining dietary N in most growing animals is greater than 50% 8. T F In most cases, there is no justification for supplementing any mineral or vitamin at levels above that of the recommendations of the National Research Council (NRC). 9. T F Total caloric intake is more important than what foods you eat for preventing or treating obesity. Multiple choice. Choose one best answer per question. 10. ____ Which of the following fatty acids usually found in higher concentrations in animal foods than in plant foods is most likely to increase the risk of cardiovascular disease? a. stearic (C18:0) b. vaccenic (trans C18:1) c. myristic acid (C14:0) d. actually none of these is a problem 11. ____ One serving of a fat-free rice dish has 30 grams of starch, 10 grams of protein, and no sugar. How many calories would you obtain from it on an ME basis (using typical caloric values of a food label)? a. 40 b. 160 c. 176 d. 210 e. none of these is close 12. ____ In the conversion from ME to NE, chemical energy is lost as: a. urine energy b. gas energy c. both A and B d. neither A nor B 13. ____ Which compounds are considered glucogenic? a. alanine and glutamine b. propionate and lactate c. most TCA cycle intermediates d. all of these e. none of these 14. ____ If your last meal was about 12 hours ago, this would be the primary source of your blood glucose. a. muscle glycogen b. muscle amino acids c. liver glycogen d. liver amino acids 15. ____ All metabolic reactions must be thermodynamically favorable. This means: a. some body heat must be used to sustain most metabolic reactions b. some of the chemical energy in a metabolic pathway will be converted to heat c. the entropy of a system must always decrease d. both b and c e. none of these 16. ____ As a lactating cow eats more and produces more milk, she converts a greater fraction of her feed energy to milk energy.
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This note was uploaded on 03/19/2008 for the course ANS 313 taught by Professor Vandehaar during the Fall '07 term at Michigan State University.

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2006_Final_Exam_with_key - ANS 313 Final Exam. Dec 11, 2006...

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