Chemistry: Atoms, Molecules, and Macromolecules
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Questions and Answers

What is the fundamental difference between an atom and a molecule?

  • An atom cannot exist independently, while a molecule can.
  • An atom consists of protons, neutrons, and electrons, while a molecule does not.
  • An atom has a nucleus, while a molecule does not.
  • An atom is a building block of matter, while a molecule is a combination of atoms. (correct)

    • Which macromolecule is primarily responsible for providing energy to the body?

  • Protein
  • Carbohydrate (correct)
  • Lipid
  • Nucleic acid

    • What property of water allows it to moderate temperature changes in organisms and environments?

  • Its low surface tension
  • Its low density as a solid
  • Its high boiling point
  • Its ability to form hydrogen bonds (correct)

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