Tag: functions and principal sources of vitamins and minerals

Questions Related to functions and principal sources of vitamins and minerals

Which is not the function of vitamins

biology constitutes of diet role of vitamins functions and principal sources of vitamins and minerals digestive disorders need for nutrients

  1. Metabolism

  2. Digestion

  3. Growth

  4. None of the above

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Correct Option: B

Animals do not synthesise ____________.

biology constitutes of diet role of vitamins functions and principal sources of vitamins and minerals digestive disorders need for nutrients

  1. Proteins

  2. Vitamins

  3. Glycogen

  4. Phospholipids

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Correct Option: B

Which acid is a vitamin

biology constitutes of diet role of vitamins functions and principal sources of vitamins and minerals digestive disorders need for nutrients

  1. Malic acid

  2. Palmitic acid

  3. Formic acid

  4. Ascorbic acid

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Correct Option: D

Multiple molecular forms of enzymes occurring within a plant system are known as ___________.

biology constitutes of diet role of vitamins functions and principal sources of vitamins and minerals digestive disorders need for nutrients

  1. Vitamins

  2. Co-enzymes

  3. Hormones

  4. Isohyets

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Correct Option: A

Which of the following statements is not correct?

biology constitutes of diet role of vitamins functions and principal sources of vitamins and minerals digestive disorders need for nutrients

  1. Amino acids are a product of the digestion of proteins

  2. Vegetable fats contain enough vitamin A and D

  3. Pepsin is produced in the glands in the lining of the stomach

  4. Vitamin C is most plentiful in citrus fruits

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Correct Option: B
Explanation:

  • The end product of protein digestion is amino acids.
  • The most common source of Vitamin C is citrus fruits.
  • The stomach mucosa’s epithelial lining consists only of surface mucous cells, which secrete a protective coat of alkaline mucus. A vast number of gastric pits dot the surface of the epithelium, giving it the appearance of a well-used pincushion, and mark the entry to each gastric gland, which secretes a complex digestive fluid referred to as gastric juice. Chief cells—Located primarily in the basal regions of gastric glands are chief cells, which secrete pepsinogen, the inactive proenzyme form of pepsin. HCl is necessary for the conversion of pepsinogen to pepsin.
  • Fish oil contains enough vitamin A and D.

So, the correct answer is 'Vegetable fats contain enough vitamin A and D'.

Vitamins with some enzymes act as

biology constitutes of diet role of vitamins functions and principal sources of vitamins and minerals digestive disorders need for nutrients

  1. Co-enzyme

  2. Apoenzyme

  3. Holoenzyme

  4. Cofactor

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Correct Option: A
Explanation:

Vitamins with some enzymes act as coenzyme. Coenzymes are organic non protein molecules that bind with the protein molecule (apoenzyme) to form the active enzyme (holoenzyme). A number of the water-soluble vitamins such as vitamins B$ _1$, B$ _2$ and B$ _6$ serve as coenzymes.

An apoenzyme is an inactive enzyme, activation of the enzyme occurs upon binding of an organic or inorganic cofactor. 
Holoenzyme is an apoenzyme together with its cofactor. A holoenzyme is complete and catalytically active.
A cofactor is a non-protein chemical compound that is required for the protein's biological activity. These proteins are commonly enzymes, and cofactors can be considered "helper molecules" that assist in biochemical transformations.
Therefore, the correct answer is option A.

Vitamins with some enzymes act as

biology constitutes of diet role of vitamins functions and principal sources of vitamins and minerals digestive disorders need for nutrients

  1. Co-enzyme

  2. Apo-enzyme

  3. Holo-enzyme

  4. Co-factor

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Correct Option: A
Explanation:

Co-factor is a non-protein chemical compound that is required for the protein's biological activity. These molecules are commonly enzymes and co-factors can be helper molecules that assist in biochemical transformations such as vitamins.
Co-factors can be subdivided into either one or more inorganic ions , or a complex organic or metallo-organic molecule, called as a co-enzyme, most of which are derived from vitamins.
An inactive enzyme without the co-factor is called an apoenzyme while the complete enzyme with the co-factor is called as a holoenzyme.

The name vitamin was used for the first time by

biology constitutes of diet role of vitamins functions and principal sources of vitamins and minerals digestive disorders need for nutrients

  1. Funk

  2. Aristotle

  3. Eijikmann

  4. Hopkins

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Correct Option: A
Explanation:

In 1911, Casimir Funk isolated a concentrate from rice polishings that cured polyneuritis in pigeons. He named the concentrate vitamin because it appeared to be vital to life and because it was probably an amine.

Organic nutrients that regulate physiological processes by serving as coenzymes are called

biology constitutes of diet role of vitamins functions and principal sources of vitamins and minerals digestive disorders need for nutrients

  1. vitamins

  2. trace elements

  3. minerals

  4. amino acids

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Correct Option: A
Explanation:

Non-protein components of certain enzymes are called cofactors. If the cofactor is organic, then it is called a coenzyme. Coenzyme is relatively small molecules compared to the protein part of the enzyme and many of the coenzymes are derived from vitamins

So, the correct answer is 'Vitamins'

Fat soluble vitamins are

biology constitutes of diet role of vitamins functions and principal sources of vitamins and minerals digestive disorders

  1. Vitamin A, B and C

  2. Vitamin A, B and D

  3. Vitamin A, D , E and K

  4. Vitamin C and D

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Correct Option: C