Essay on : 1910s to 1950s: era of vitamin discovery
Answers
Depending on their age, size, and activity level, toddlers need about 1,000–1,400 calories a day. Refer to the chart below to get an idea of how much your child should be eating and what kinds of foods would satisfy the requirements.
Use the chart as a guide, but trust your own judgment and a toddler's cues to tell if he or she is satisfied and getting adequate nutrition. Nutrition is all about averages so don't panic if you don't hit every mark every day — just try to provide a wide variety of nutrients in your child's diet.
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Explanation:
A vitamin is an organic molecule (or a chemically closely related set of molecules, i.e. vitamers) that is an essential micronutrient which an organism needs in small quantities for the proper functioning of its metabolism. Essential nutrients cannot be synthesized in the organism, either at all or not in sufficient quantities, and therefore must be obtained through the diet. Vitamin C can be synthesized by some species but not by others; it is not a vitamin in the first instance but is in the second. The term vitamin does not include the three other groups of essential nutrients: minerals, essential fatty acids, and essential amino acids.[2] Most vitamins are not single molecules, but groups of related molecules called vitamers. For example, vitamin E consists of four tocopherols and four tocotrienols. Some sources list fourteen vitamins, by including choline,[3] but major health organizations list thirteen: vitamin A (as all-trans-retinol, all-trans-retinyl-esters, as well as all-trans-beta-carotene and other provitamin A carotenoids), vitamin B1 (thiamine), vitamin B2 (riboflavin), vitamin B3 (niacin), vitamin B5 (pantothenic acid), vitamin B6 (pyridoxine), vitamin B7 (biotin), vitamin B9 (folic acid or folate), vitamin B12 (cobalamins), vitamin C (ascorbic acid), vitamin D (calciferols), vitamin E (tocopherols and tocotrienols), and vitamin K (phylloquinone and menaquinones).[4][5][6]