which of the following vitamins cannot be synthesized by your body course hero

The human body cannot synthesize vitamin E, but it can store important reserves from this vitamin in the liver, but also in fat tissue from the heart and muscles, and in the genitals (testicles and uterus), such as the pituitary.

Full Answer

Which vitamin can not be synthesized by the body?

Humans cannot synthesize vitamins A, B1 (thiamine), B2 (riboflavin), B5 (pantothenic acid), B6 (pyridoxine), B7 (biotin), B9 (folate), B12 (cobalamin), E and K but are able to synthesize some vitamin B3 (niacin) and D.

Which of the following vitamins can be synthesized by the human body?

vitamin DHumans are able to synthesize certain vitamins to some extent. For example, vitamin D is produced when the skin is exposed to sunlight; niacin can be synthesized from the amino acid tryptophan; and vitamin K and biotin are synthesized by bacteria living in the gut.

Which of the following vitamins can be synthesized by the human body quizlet?

Of the 13 recognized as essential, our bodies can make only small amounts of vitamin A, vitamin D, niacin(synthesized from the amino acid tryptophan), biotin, and vitamin K.

Which fat soluble vitamins can be synthesized in the body?

Vitamin K is needed in the liver for formation of several blood clotting factors. Vitamin K1, (phylloquinone) is synthesized by plants, whereas vitamin K2 homologs (menoquinones) are synthesized by bacteria. The human body can obtain vitamin K from dietary sources as well as through synthesis by the gut microflora.

Which of the following is Cannot be synthesized in the human?

Of the 21 amino acids common to all life forms, the nine amino acids humans cannot synthesize are phenylalanine, valine, threonine, tryptophan, methionine, leucine, isoleucine, lysine, and histidine.

Can vitamin B12 be synthesized by the human body?

Abstract. Vitamin B12 or cobalamin is a vitamin that can only be synthesized by microorganisms which in humans are localized in the colon where B12 cannot be taken up by the organism. Thus, cobalamin has to be taken up by the food and only animal derived food delivers sufficient amounts.

Can vitamin D be synthesized by the human body?

While it can also be obtained from dietary sources or supplements, vitamin D3 (cholecalciferol) is synthesized in the human skin from 7-dehydrocholesterol upon exposure to ultraviolet-B (UVB) radiation from sunlight (see the separate article on Vitamin D and Skin Health).Feb 11, 2021

Can vitamin K be synthesized by the human body?

Vitamin K1 or phylloquinone is synthesized by plants and is the predominant form in the diet. Vitamin K2 includes a range of vitamin K forms collectively referred to as menaquinones. Most menaquinones are synthesized by human intestinal microbiota and found in fermented foods and in animal products.

Can vitamin E be synthesized by the human body?

Vitamins are organic molecules that are necessary for normal metabolism in animals, but either are not synthesized in the body or are synthesized in inadequate quantities. Consequently, vitamins must be obtained from the diet.

Where is vitamin A synthesized?

the liverThe retinyl esters are transported to the liver via chylomicrons and stored in the liver. Thus, the liver serves as a reservoir or 'buffer' of vitamin A. β-Carotene, synthesized in abundance in many plants, especially yellow vegetables, is an important provitamin source of vitamin A.

Can minerals be synthesized by the body?

Minerals. Minerals are inorganic chemical elements that are necessary for normal body processes and good health. Because they are inorganic and not synthesized biologically, all nutrient minerals are considered essential nutrients.Sep 4, 2021

Which vitamins are synthesized bacteria?

Vitamin B12 synthesis by human small intestinal bacteria.Feb 21, 1980