Proteins in the human body are composed of unique and specific arrangement of:
Correct answer: B. 20 types of amino acids
- A. 25 types of amino acids
- B. 20 types of amino acids
- C. Over 20 types of amino acids
- D. Less than 20 types of amino acids
Explanation
Proteins in the human body are synthesized using 20 different amino acids, which combine in unique sequences to form the vast array of proteins essential for various functions. Options stating more or less than 20 amino acids are incorrect because, despite the existence of more than 20 amino acids in nature, only 20 are involved in human protein synthesis.
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About Biological Molecules
The chapter covers water's polarity and biological roles, carbohydrates, lipids, proteins and nucleic acids, including their monomers, bonds, structures and functions. It also distinguishes RNA from DNA and explains conjugated molecules such as glycoproteins, glycolipids and nucleoproteins, which combine organic molecules with a non-protein component.
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