BIOD 121 PORTAGE LEARNING M1 M6
PRACTICE QUESTIONS AND DETAILED
SOLUTIONS
◉ vitamins produced by the body.
Answer: vitamin K and biotin (gut flora)
vitamin D (skin)
vitamin A (from beta carotene)
niacin (tryptophan)
◉ two criteria for vitamins.
Answer: 1. must be consumed in the diet to maintain health.
2. symptoms of deficiency occur in its absence
◉ enrichment.
Answer: adding nutrients back that have been lost to processing
◉ fortification.
Answer: adding nutrient not naturally present in a food
◉ Fat soluble vitamins.
, Answer: Vitamins A, D, E, K
stored in liver and adipose tissue
excess consumption could lead to toxic levels
◉ two forms of vitamin a.
Answer: 1. Preformed Vitamin A (retinol/retinal), found in foods and
animal products: liver, fish, fish oils, fortified milk, yogurt, and eggs
2. Provitamin A or Carotene, the pigment in yellow, orange, and deep
green fruits or vegetables
◉ vitamin A functions.
Answer: Vision
skin and epithelial health
growth, development, reproduction
disease prevention
◉ two forms of vitamin D.
Answer: D2 (ergocalciferol, synthetic) and D3 (cholecalciferol)
produced skin > liver > kidney
fatty fish, fortified cereal, eggs, butter, fortified milk, and yogurt
◉ vitamin D functions.
PRACTICE QUESTIONS AND DETAILED
SOLUTIONS
◉ vitamins produced by the body.
Answer: vitamin K and biotin (gut flora)
vitamin D (skin)
vitamin A (from beta carotene)
niacin (tryptophan)
◉ two criteria for vitamins.
Answer: 1. must be consumed in the diet to maintain health.
2. symptoms of deficiency occur in its absence
◉ enrichment.
Answer: adding nutrients back that have been lost to processing
◉ fortification.
Answer: adding nutrient not naturally present in a food
◉ Fat soluble vitamins.
, Answer: Vitamins A, D, E, K
stored in liver and adipose tissue
excess consumption could lead to toxic levels
◉ two forms of vitamin a.
Answer: 1. Preformed Vitamin A (retinol/retinal), found in foods and
animal products: liver, fish, fish oils, fortified milk, yogurt, and eggs
2. Provitamin A or Carotene, the pigment in yellow, orange, and deep
green fruits or vegetables
◉ vitamin A functions.
Answer: Vision
skin and epithelial health
growth, development, reproduction
disease prevention
◉ two forms of vitamin D.
Answer: D2 (ergocalciferol, synthetic) and D3 (cholecalciferol)
produced skin > liver > kidney
fatty fish, fortified cereal, eggs, butter, fortified milk, and yogurt
◉ vitamin D functions.
