Asked in PMC Practice Test 26 (2021) 2021Moderate

Water soluble vitamins contain high proportion of which of the following?

Correct answer: D. Both A and B

  • A. Electronegative oxygen
  • B. Nitrogen atom
  • C. Sulphur
  • D. Both A and B

Explanation

Most contain nitrogen, and some also contain sulfur or cobalt or oxygen except carbon, hydrogen elements.

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About Classification of Biological Molecules

Biological molecules are classified as carbohydrates, lipids, proteins and nucleic acids, with water, minerals and vitamins also supporting cellular processes. The key distinctions involve their monomers, chemical bonds, structures and functions, including glucose and starch, fatty acids and triglycerides, amino acids and polypeptides, and nucleotides in DNA and RNA.

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