Which of the following is not a macromolecule?
Correct answer: A. Sand
- A. Sand
- B. Hemoglobin
- C. Diamond
- D. Maltose
Explanation
A macromolecule is a large, complex molecule typically formed by the polymerization of smaller subunits. Sand is not a macromolecule. It is composed of small mineral particles primarily made up of silicon dioxide (SiO₂). It does not exhibit the large and complex structure characteristic of macromolecules.Therefore, the correct answer is (a) sand, as it does not fit the criteria of a macromolecule.
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About Fundamental Concepts of Chemistry
Mole calculations connect mass, number of particles and Avogadro's number, while balanced equations provide the mole ratios used in stoichiometry. Questions cover limiting and excess reactants, theoretical yield and percentage yield, including identifying which reactant is consumed first and comparing the actual product with the maximum possible product.
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