FNDH 400: Ch. 10 "Macronutrient Metabolism Micronutrients" questions and answers well illustrated.

FNDH 400: Ch. 10 "Macronutrient Metabolism Micronutrients" questions and answers well illustrated. Iodine is important for the synthesis of which hormone? a) Parathyroid hormone b) Insulin c) Estrogen d) Thyroid hormone e) Testosterone - correct answers.d For most Americans, iodized salt is not adequate to meet the iodine RDA. (true or false) - correct - a small amount of iodized salt is adequate to meet the iodine RDA A goitrogen is a compound that enhances thyroid hormone production and utilization. (true or false) - correct - a goitrogen interferes, not enhances, thyroid hormone production and utilization T4 is the circulating thyroid hormone that contains more iodines than the active thyroid hormone, T3. (true or false) - correct What micronutrient is involved in the metabolism of thyroid hormones through deiodinases? a) Vitamin E b) Vitamin C c) Iron d) Vitamin B12 e) Selenium - correct answers.e - deiodinases are selenoenzymes, so selenium is important for thyroid hormone metabolism Goiter is: a) enlargement of the thyroid gland & is less serious b) results in stunted growth and cognitive impairment - correct answers.a Cretinism: a) enlargement of the thyroid gland & is less serious b) results in stunted growth and cognitive impairment - correct answers.b Which of the following is manganese not a cofactor for? a) Urea cycle enzyme b) Glycolysis enzyme c) Gluconeogenesis enzymes d) Proteoglycan enzymes e) Superoxide dismutase - correct answers.b - there is not a glycolysis enzyme that uses manganese as a cofactor Which of the following is not true about thiamin? a) Phosphates must be cleaved from it before uptake b) The primary cofactor form is thiamin phosphate c) It is heat-sensitive d) There is little storage of it - correct answers.b - primary cofactor is thiamin pyrophosphate (TPP) Which function of thiamin does not involve thiamin pyrophosphate (TPP)? a) Membrane and nerve conduction b) Pentoses and NADPH synthesis c) Decarboxylation reactions d) All of the above involve TPP - correct answers.a - membrane and nerve conduction is believed to involve thiamine triphosphate (3 phosphates instead of 2 like in TPP) Wet beriberi affects the nervous system and results in loss of muscle function, numbness and/or tingling. (true or false) - correct - statement above describes dry beriberi - wet beriberi affects the cardiovascular system and results in pitting edema (swelling) and enlargement of the heart Which of the following is not a reason that alcoholics develop Wernicke-Korsakoff Syndrome?