coenzymes
help move water through the organism's body.
coenzymes
Most vitamins are coenzymes needed to help the body utilize essential nutrients.
Certain substances used to be considered vitamins, but no longer are either because they are no longer considered essential, because they can be synthesized within the body in sufficient quantities or because they are essential only for organisms other than humans. Hence the missing numbers - there are substances with those numbers, but they aren't technically vitamins.
The six classes of essential nutrients are protein, minerals, water, carbohydrates, fats, and vitamins. These nutrients are necessary because they perform different roles, such as provide energy for the body and help to regulate different body functions like metabolism. These nutrients also are required to build body tissues, organs, and bones.
because it has plenty of minerals and vitamins in it
Vitamins and minerals are important to a living organism because they provide necessary nutrients for good health and growth.
The vitamin B complex consists of 12 related water-soluble substances. Eight are considered essential vitamins because they need to be included in the diet. Four are not essential because the body can synthesize them.
Yes. Biotin (Vitamin B-7) is considered to be an essential vitamin. This is because humans need it for "cell growth, the production of fatty acids, and the metabolism of fats and amino acids". (from wikipedia) Essential vitamins are basically vitamins that humans need, but have to be taken from food because humans can't produce enough of them.
No because if one person does not reproduce the whole population will not just disappear. There are many people who never reproduce and many people who do. But all in all, it is not essential for ONE organism to reproduce.
they cannot be manufactured by the organism
Vitamins are an essential nutrient because they build and maintain healthy bones and muscle tissue. They also support our immune system, maintain the health of our blood, and ensure healthy vision. Vitamins are micro-nutriens, meaning they are needed in small amounts to sustain our normal health and body functions. Some examples of common vitamins are Vitamin C and K, and the many B Vitamins.