FNDH 400: Ch. 11 "One-Carbon Metabolism Micronutrients" questions and answers well illustrated.

FNDH 400: Ch. 11 "One-Carbon Metabolism Micronutrients" questions and answers well illustrated. One carbon metabolism is essentially focused on the metabolism, or movement, of methyl groups. (true or false) - correct Which of the following is not a correct descriptor of folic acid? a) Synthetic b) Polyglutamate c) Oxidized Form d) Not Natural e) All of the above are correct - correct answers.b - Folic acid is a monoglutamate, meaning it only has one glutamate in its tail Which of the following is not a correct descriptor of folate? a) Reduced Form b) Natural c) Contains multiple glutamates in tail d) Heat and light sensitive e) All of the above are correct - correct answers.e Dietary Folate Equivalents were created to account for the higher bioavailability of folate compared to folic acid. (true or false) - correct - they were created to account for the higher bioavailability of 'folic acid' compared to 'folate' Prior to uptake, glutamates will be cleaved off of folic acid to form the monoglutamate form. (true or false) - correct - glutamates will be cleaved off of 'folate' not folic acid Which of the following is not a function of folate/folic acid? a) Heme synthesis b) Amino acid metabolism c) Donates a methyl group to cobalamin forming methylcobalamin d) DNA base synthesis - correct answers.a - Folate/folic acid are not involved in heme synthesis like vitamin B6 Folate deficiency does not result in which of the following? a) Macrocytic anemia b) Large, nucleated red blood cells c) Improper red blood cell division d) Microcytic anemia e) Megaloblastic anemia f) Folate deficiency results in all of the above - correct answers.d Spina bifida is the most common neural tube defect that results from failure of the neural tube to close properly. (true or false) - correct Which of the following is not a reason why the United States fortifies cereals, grains and some corn masa flour with folic acid? a) Not depend on women of child-bearing age to take folic acid supplements b) To increase the chance that women of child-bearing age get the folic acid needed c) The neural tube closes so early that some women do not know they are pregnant d) All of the above are reasons e) To benefit others (men, elderly etc.) who are not women of child-bearing age - correct answers.e - The decision to fortify with folic acid was focused specifically on women of childbearing age even though others will also consume folic acid Which of the following is not true about B12? a) Spirulina and fermented soy products are not reliable sources b) Nutritional yeast and fortified soy milk are good sources of B12 for vegetarians/vegans c) Animals consume B12 produced by microorganisms within soil or produce B12 within their GI tracts d) It is found almost exclusively in animal products e) All of the above are true - correct answers.e