Do You Know Your Vitamins?

Vitamin D is synthesized by the body when the skin is exposed to sunlight. Therefore, people who do not have adequate skin exposure to sunlight may not be able to produce enough vitamin D. This can be due to various reasons such as living in areas with limited sunlight, spending most of the time indoors, or covering the skin with clothing. In such cases, it is essential for these individuals to obtain vitamin D through other sources such as diet or supplements to maintain their overall health.

Supplementation is important for the treatment of certain health problems because it can provide essential nutrients that may be lacking in the diet. In some cases, specific vitamins, minerals, or other supplements may be recommended by healthcare professionals to address specific deficiencies or support the body's healing process. Therefore, the answer "Absolutely" indicates that supplementation is indeed important for the treatment of certain health problems.

Ascorbic acid, also known as Vitamin C, is a vitamin that is essential for humans but not for most other animals. Humans lack the enzyme necessary to produce ascorbic acid in their bodies, so they must obtain it through their diet. Other animals, such as most mammals, can produce ascorbic acid internally and do not require it in their diet. Therefore, ascorbic acid is specifically used by humans and not necessary for most other animals.

The B complex vitamins are a group of water-soluble vitamins that play a crucial role in the body's metabolism. They function as enzyme cofactors, meaning they assist enzymes in carrying out various chemical reactions in the body. Enzymes are proteins that catalyze biochemical reactions, and cofactors are non-protein molecules that help enzymes function properly. Therefore, the B complex vitamins act as essential components of enzymes, facilitating their ability to catalyze reactions and support metabolic processes in the body.

An organic compound is said to be a vitamin when the organism cannot synthesize the compound in sufficient quantities. This means that the organism is unable to produce enough of the compound on its own and therefore needs to obtain it from external sources, such as food or supplements. Vitamins are essential for various biological processes and functions in the body, and their deficiency can lead to various health problems. Therefore, when an organism is unable to synthesize a specific compound in sufficient quantities, that compound is considered a vitamin for that organism.

Thirteen vitamins are universally recognized at present. These include vitamin A, vitamin D, vitamin E, vitamin K, vitamin C, vitamin B1 (thiamine), vitamin B2 (riboflavin), vitamin B3 (niacin), vitamin B5 (pantothenic acid), vitamin B6 (pyridoxine), vitamin B7 (biotin), vitamin B9 (folate), and vitamin B12 (cobalamin). Each of these vitamins plays a crucial role in maintaining good health and fulfilling various bodily functions.

Vitamins have diverse biochemical functions. They are essential for various metabolic processes in the body, such as energy production, immune function, and cell growth. Each vitamin has a specific role and function in the body, and they work together to support overall health and well-being. Therefore, the correct answer is D. Diverse.

Bone is not a source of Vitamin A. Milk, fish, and liver are all good sources of Vitamin A. Milk contains retinol, which is a form of Vitamin A. Fish, especially fatty fish like salmon and mackerel, is rich in Vitamin A. Liver, particularly beef liver, is also a great source of Vitamin A. However, bones do not contain significant amounts of Vitamin A.

In the mid-1930s, the first commercial yeast-extract vitamin B complex and semi-synthetic vitamin C supplement tablets were sold. This suggests that these types of supplements became available to the public during this time period.

Vitamins are classified based on both their biological and chemical activity. This means that their classification is determined by how they function in the body (biological activity) as well as their chemical properties. This classification helps to categorize and understand the different types of vitamins and their roles in maintaining health and preventing deficiencies.