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.
Vitamin D
Vitamin D and Niacin are the only vitamins the body is capable of producing on its own (given certain conditions) and are therefore not required to be taken in through diet.
Vitamin D is synthesized in the skin from cholesterol, in presence of ultraviolet rays from sun light.
No. It is only synthesised by microorganisms.
Vitamin D, B3 , B7, and vitamin K
vitamin D and vitamin B12
K vitamin
Body size is determined by human growth hormone, which is synthesized within the anterior pituitary gland.
tryptophan is the amino acid precursor of niacin
It is very healthy.It is packed with vitamins , minerals and natural fiber. It helps support blood pressure ,it can also protect the human body from cancers and diseases. It makes the digestive system work better too!
Bacteria is useful in making many medicines. Foe scientific study. To maintain balance in environment.
Protein, lipids, carbohydrates, vitamins, minerals and water.
The colonic microflora in the large intestine help to synthesize certain vitamins. The primary function of the large intestine is to salvage energy from carbohydrate not digested in the upper gut.
"synthesized"
Both are synthesized in the body
it should be required for human body. and the answer is VITAMINS
There are 6 major: A, the B complex (B1-17) , C, D, E, and K. There are also other vitamin-like compounds that resemble vitamins in their activity but are normally synthesized in the human body in adequate amounts. What happened to vitamins F-J? They were found to be like other vitamins and re-assigned, mostly to the B group. http://www.cyber-north.com/vitamins/index.html
The importance of vegetables in our diet is to help provide the human body with vitamins. The human body needs vitamins in order to function properly.
D
Fiber and vitamins.
antibiotics
There are many different vitamins, and they all do different things for the body.
vitamins and minerals are nutrients that you can get in small quantity from fruits and vegetables,and they are beneficial for the human body.
Vitamins, except those ones produced by the bowel's good bacterias, have to be assimilated from vegetables and fruits), or dietary supplements. Hormones are produced inside of the body, and can be also obtained through synthesized hormones, under medical prescription. Vitamins and hormones have many functions in the organism, but their way of action are different.