BIOL 1003 Lecture Notes - Joule, Weaning, Constipation

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Role of vitamins with respect to vitamin d and of. Provided in fresh vegetables, meat, fish, eggs, fruit. Essential in the diet but required in small amounts. In bones, teeth, small amounts in tissues, body fluids. During lactation, women tend to eat more automatic increase in calcium intake. Lost in blood, urine, rubbed off intestinal epithelial cells by food. People who are vulnerable to a deficiency of iron: People with a high physiological requirement for iron. Children with late weaning and inappropriate infant food. Growing people \ children and pregnant women. Women of reproductive age / menstruation / loss of blood \ iron. People who drink too much tea / tannin inhibits absorption of iron from gut. Rate of metabolism when a person is at rest / but awake. Energy exhaustion to carry out essential activities that maintain live: e. g. diffusion, breathing, pumping of blood, not movement. Measured in kj kg-1 h-1 or kj m-2 h-1.

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