NUTR 121 CH 7 Practice Test with Questions and Answers

NUTR 121 CH 7 Practice Test with Questions and Answers A vitamin is defined as an essential, non-caloric, organic nutrient needed in _____ [tiny, large, absorbed, converted, water soluble, fat soluble] amounts in the diet. The role of many vitamins is to help make possible the processes by which other nutrients are digested and _____ [tiny, large, absorbed, converted, water soluble, fat soluble]. Some of the vitamins are _____ [tiny, large, absorbed, converted, water soluble, fat soluble], such as vitamin A, D, E, and K. Other vitamins are _____ [tiny, large, absorbed, converted, water soluble, fat soluble] and easily travel through the blood stream. ANSWER A vitamin is defined as an essential, non-caloric, organic nutrient needed in tiny amounts in the diet. The role of many vitamins is to help make possible the processes by which other nutrients are digested and absorbed. Some of the vitamins are fat soluble, such as vitamin A, D, E, and K. Other vitamins are water soluble and easily travel through the blood stream. What is the active form of vitamin A? It is made from beta-carotene and is stored in specialized liver cells in animals and humans. a. keratin b. thiamin c. rhodopsin d. retinol e. collagen ANSWER d. retinol Vitamin D is not an essential nutrient if sufficient sunlight is met. We need vitamin D to help regulate blood ______ [bone, carotene, calcium, heart, soft tissue] and phosphorus to maintain ______ [bone, carotene, calcium, heart, soft tissue] integrity. ANSWER Vitamin D is not an essential nutrient if sufficient sunlight is met. We need vitamin D to help regulate