FNDH 620 exam 3 pop quiz questions WITH 100% CORRECT ANSWERS

nicotaminamide, but not nicotinic acid, is the form required for the synthesis of nicotinamide adenine dinucleotide false how are the recommended intakes of niacin expressed? (units) niacin equivalents (mgs) bioavailability of biotin is near 0% from wheat true intake of raw egg white may cause deficiency of biotin which of the following is one of the main functions of vitamin B6 transamination methionine cycle requires all of the above (B6, B12, folate, niacin) which anemia is related to folate deficiency? megaloblastic anemia to protect against birth defects, a higher RDA of folic acid has been suggested for pregnant women true vitamin B12 is only available from ___________ products animal why is the RDA of vitamin B12 so low? A, B, and C (in the liver free cobalamin can be stored for years, little B12 in the body is degraded, whole body turnover is about 0.1% daily) high dietary folate may cure megaloblastic anemia caused by: both A and B (folate deficiency, B12 deficiency) formation of retinol from B-carotene requires the presence of what B vitamin? niacin dietary fat is not very important regarding the digestion and absorption of pre- and provitamin A forms false within the nucleus, retinoic acid binds to ______________ retinoid X receptors what is the principle transport vehicle for vitamin E in the blood? lipoproteins Which mechanism has been proposed but not proven as vitamin E's principle function against chronic disease prevention? anti-oxidation for which vitamin is the tolerable upper limit set because of increased tendency for bleeding? vitamin E (because high doses of vitamin E increase the risk of bleeding) what is the chemical name for vitamin K in green plants? phylloquinone as a coenzyme, vitamin K is required in the carboxylation of Gla proteins by converting glutamate residues to gamma-carboxyglutamate residues true