Final Crenshaw Questions - Comparative Animal Nutrition | AN SCI 311, Exams of Zoology

Download Final Crenshaw Questions - Comparative Animal Nutrition | AN SCI 311 and more Exams Zoology in PDF only on Docsity! AS/DS/NS 311. Final Crenshaw Ouestions. Write name on back Multiple Choice. Choose one per question. (1 point each, except matching, ½ each). 1. In mammals the percentage of body water: a. decreases with body protein content b. decreases with body fat content c. remains constant due to osmotic balance d. Both “a” and “b” are correct 2. Which group of vitamins are most likely deficient in ingredients commonly fed to swine so supplemental sources must be added to the diet. a. niacin, folate, and B6 b. niacin, thiamine, and B12 c. niacin, B12, and riboflavin d. niacin, biotin, and B12 3. The more common target tissues for 1, 25 (OH)2 vitamin D include: a. skin, GI tract, and bone b. GI tract, bone, and kidneys c. GI tract, bone, and liver d. Small intestine, bone, and parathyroid gland 4. An alternate pathway to deplete homocysteine involves use of methyl groups from a. betaine and choline b. biotin c. vitamin K and vitamin A d. thiamin and pantothenic acid 5. Vitamin K is involved in gamma carboxylation to a. alter glutamate residues and affect Ca binding b. alter glutamate residues and affect Fe binding c. alter cholecalciferol synthesis to affect Ca binding d. alter hemoglobin synthesis and affect Fe binding 6. Substances in feed ingredients identified as nutraceuticals involve: a. ingredients from seafoods b. ingredients with drug additives c. ingredients with medical benefits d. ingredients free from drug additives 7. Pellagra, a nutrient deficiency disease in humans, was initially associated with two vitamins but later shown to be cured by supplements of which vitamin: a. Niacin b. Biotin c. Thiamin d. Pantothenic acid 8. Water movement in and out of the GI tract is controlled by a. an active water transporter b. aldosterone c. transport of Na d. transport of Na, K and Cl 9. If one of the following nutrients were instantly removed from the diet, which nutrient would produce deficiencies symptoms first? a. Iodine b. Riboflavin c. Vitamin E d. phosphorus 10. Generally ruminant animals do not require additions of B vitamins to diets because a. forage ingredients consumed contain abundant supplies b. ruminants can synthesize the vitamins from precursors supplied by microbes c. microbes synthesize the vitamins which are absorbed in the lower tract d. metabolism in a larger animal is slower so lower amounts are needed 11. Spina bifidia results from failure of neural tube closure in the early fetus as a results of a. vegetarian diets b. excessive animal protein consumption c. thiamine deficiencies d. folate deficiencies 12. Which vitamins are directly involved as coenzymes in substrate reactions within the TCA cycle? a. Thiamin and B6 b. Biotin and Folic acid c. Niacin and Riboflavin d. Niacin and Folic acid 13. Anemia is most often associated with a deficiency of a. Fe b. Zn c. Cu d. Ca 14. Which nutrient is never found in elemental form in nature, but as a compound with another element, because in free-form spontaneous combustion occurs a. I b. P c. K d. Fe 15. Incidence of milk fever in early lactation of animals is associated with a deficiency of: a. Mn and it’s role in superoxide dismutase b. vitamin A and it’s role in immune function c. vitamin A and inference with vitamin D binding to nuclear receptors d. serum Ca but ample dietary Ca concentrations e. serum Ca caused by deficient dietary Ca concentrations 16. In addition to a role in methyl transfer for conversion of homocysteine to methionine, vitamin B12 is involved in: a. electron transport chain to generate ATP b. nucleic acid synthesis c. a free radical scavenger d. oxidation-reduction reactions 17. Which combination of nutrients are all associated with a decrease in free radicals: a. Fe, Mn, Zn and Cu b. Se, Mn, Zn and Cu c. Co, Se, I and Fe d. Fe, Co and Se 18. Body stores of trace elements are typically regulated by: a. renal excretion of excess b. excretion of excess via bile salts c. regulation of absorption in the small intestine d. endogenous secretion of metalloproteins into the intestine lumen to bind excess metals 19. Conversion of precursors to the most active form of vitamin D occurs in: a. skin b. GI tract c. small intestine d. kidneys 20. Deficiencies of these trace minerals are often associated with deficiencies in the soils that supply feed ingredients to the animals: a. Fe and Zn b. Fe and Se c. Mn, Zn and Cu d. Se and I 21. Foods with antioxidant activity are helpful for humans because of their potential to reduce chronic health concerns, but are not needed in production livestock diets. a. True b. False 42. Which animal species would be more susceptible to Mn deficiency? a. swine b. poultry c. beef cows d. dairy cows e. sheep 43. The only nutrient regulated by FDA is a. Se b. P c. Cu d. Mo 44. Early signs of vitamin K deficiency would likely be detected as a a. change in bone mass b. a tetany due to Ca deficiencies c. an increased in time required for blood coagulation d. a decrease in time required for blood coagulation 45. Which nutrient deficiency would be evident first in an adult consuming a vegetarian diet? a. Vitamin A b. Vitamin B12 c. folic acid d. Se 46. Dietary sources of B vitamins are converted into complex derivatives before becoming functional in metabolic pathways. These complex derivatives are: a. Enzymes b. coenzymes c. acyl groups d. reducing equivalents 47. Under conditions of limited water supplies, which food source would you select to reduce chances of a water deficiency? a. carbohydrate b. protein c. amino acids d. fat e. electrolytes 48. Phytic phosphorus is a source of P from: a. plants that is available to monogastrics b. plants that is not available to monogastrics c. animals that is available to monogastrics d. animals that is not available to monogastrics 49. Mitochondrial isomers of super oxide dismutase need which element as a cofactor: a. Mn b. Fe c. Zn d. K 50. Transport of reducing equivalents among organic compounds thru the electron transport chain results in: a. consumption of ADP b. generation of ATP c. generation of ADP d. consumption of ATP e. both ____ and ____ are correct 51. Nutrient metabolism of dietary carbohydrates, fat, and proteins involve numerous chemical reactions. B vitamins are involved in many of these steps and function to: a. control metabolic rate b. prevent oxidative damage by functioning as antioxidants c. transfer chemical energy into forms that can be used in other pathways in cells d. store chemical energy for use when nutrients are not available for metabolism 52. Differences in the intracellular and extracellular concentrations of sodium and potassium are maintained by: a. diffusion b. active transport c. passive transport d. aldosterone 53. Cation and anion balance in the body is regulated mainly by a. renal responses b. respiratory responses c. GI tract absorption d. Both ___ and ___ 54. Sodium is the major extracellular cation, which anion balances sodium in extracellular fluids? a. potassium b. chloride c. magnesium d. phosphate e. bicarbonate 55. Which vitamin is involved in the conversion of proline to hydroxyproline? a. Biotin b. B12 c. vitamin A d. vitamin C 56. (½ point each) Match the following nutrients with only one terms that is most closely associated with that nutrient. Nutrients can be used more than one time - or not at all. A. niacin _____ basal metabolic rate B. riboflavin _____ collagen crosslinks C. thiamin _____ perosis D. pantothenic acid _____ transamination E. vitamin B6 _____ anemia F. Folic acid _____ curled toe paralysis G. Biotin _____ goiter H. vitamin B12 _____ spina bifidia I. Vitamin C _____ cysotolic superoxide dismutase J. Mn _____ oxidative damage K. Fe _____ methyl transfers L. Se _____ Mulberry heart disease M. Cu _____ beriberi N. I _____ black tongue _____ bound by avidin in raw eggs _____ cofactor for carboxylases _____ binds to tyrosine residues _____ Coenzyme A _____ scurvy _____ animal protein growth factor