Biology
Grade-7
Easy

Question

___ are made up of carbon, hydrogen, and nitrogen.

  1. Calcium
  2. Lipids
  3. Proteins
  4. None of the above

hintHint:

Amino acids for the building blocks of these complex molecules.

The correct answer is: Proteins


    • Proteins or polypeptides contain carbon, hydrogen, and nitrogen atoms
    • Besides oxygen and sulfur atoms are also found in amino acids
    • Proteins are made up of amino acids
    • Proteins play a variety of role in the living systems like providing immunity, structural support, transportation and storage and many more
    • Amino acids are classified into essential and nonessential amino acids

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