The nitrogen containing base that is found only in RNA is uracil. It takes the place of thymine in DNA
No. human body can not synthesize vitamin B 12. You have to consume the same through your food only. Only non-veg food contains the most of the vitamin B 12 you get. Strict vegans should be given injections of vitamin B 12.
According to scientists, carotenoids contain only carbon and hydrocarbon atoms and are usually found in carrots and apricots. Also, carotenoids is an excellent source of vitamin A.
Pills containing a single active ingredient. E.g. pills containing only diclofenac are mono preperations, pills containing diclofenac AND misoprostol are combination preparations.
Beriberi is caused by a deficiency of vitamin B1 also called thiamine. Thiamine is found in cereal, green vegetables, fruit and legumes. Diets which are poor in these foods can result in beriberi. In underdeveloped countries, it is mostly caused by famine. In Asian countries, it can result from "rice diets", where people eat mostly/only white rice. In developed countries, it is most commonly found in chronic alcoholism. It may also occur from malnutrition in the elderly : the "tea and toast diet".
b12
It is not only one vitamin E: vitamins E are a group of 8 substances containing tocopherols and tocotrienols.
Vitamin A
No, it is not. Ascorbyl palmitate is a synthetic fat-soluble form of vitamin C. Natural vitamin C is natural only when sourced from foods.
Vitamin D is only found naturally in significant levels in only a few foods, including fatty fish, cod-liver oil, and eggs.Pre-Vitamin Day's, the only non-dietary Source of Vitamin D was Sunlight. Nowadays we have several forms of supplements - CBC Radio's Quirks and Quarks weekly [for over the past thirty five Years] radio-Hour had a fabulous Segment espousing It's Benefits.
Red meats contain Vitamin B1 (thiamin), Vitamin B2 (riboflavin), Panothenic Acid, Folate, Vitamin B3 (niacin), Vitamin B6, and Vitamin B12. Meat, fish, and animal-derived products such as milk are the only foods that provide Vitamin B12 naturally.
Since Vitamin E is a micronutrient (a whole other class of nutrients), it is not found in macronutrients. Macronutrients only include carbohydrates, proteins, and fats.
Chloroplasts are found ONLY in plant cells - they are used for photosynthesis.
Yes, but only some times some times they could be harmful
The nitrogen containing base that is found only in RNA is uracil. It takes the place of thymine in DNA
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Nonmetals and metals