The Molecules and Their Composition Quiz

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Questions and Answers

Which unit of measurement can be used to measure the size of molecules?

  • Meter
  • Centimeter
  • Nanometer (correct)
  • Angstrom

What is the molecular weight of water (H2O)?

  • 2 amu
  • 18 amu (correct)
  • 16 amu
  • 20 amu

Which molecule is the most abundant in the human body?

  • Protein
  • Carbohydrate
  • Lipid
  • Water (correct)

What is the largest macromolecule in the human body?

<p>Protein (C)</p> Signup and view all the answers

Which atoms are present in proteins?

<p>Carbon, Hydrogen, Oxygen, Nitrogen, Sulfur (C)</p> Signup and view all the answers

Which of the following statements is true about molecules?

<p>Molecules are made up of two or more atoms bonded together (A)</p> Signup and view all the answers

What is the role of carbon in living organisms?

<p>Carbon is a building block of macromolecules (D)</p> Signup and view all the answers

Which of the following is a criteria for a living organism?

<p>All of the above (D)</p> Signup and view all the answers

How do scientists measure the size of molecules?

<p>Using nanometers or angstroms (B)</p> Signup and view all the answers

Which of the following is true about the size of molecules?

<p>Proteins are larger than water molecules (D)</p> Signup and view all the answers

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