Question

cells take in small, energy - rich molecules from food. these molecules include sugar molecules.
cells use the molecules in a long series of chemical reactions. these reactions are known together as cellular respiration. cellular respiration breaks down energy - rich molecules to form different molecules. this process also releases energy.
which of the following statements are true about cellular respiration? select all that apply.

• cellular respiration happens outside of cells.
• cellular respiration is a single chemical reaction.
• cellular respiration releases energy.
• cellular respiration uses energy - rich molecules.

Explanation:

• The text states cellular respiration occurs in cells (so the first option is false).
• It describes cellular respiration as a long series of reactions (so the second option is false).
• It explicitly says cellular respiration releases energy (third option is true).
• It notes cells use energy-rich molecules for this process (fourth option is true).

Answer:

• Cellular respiration releases energy.
• Cellular respiration uses energy-rich molecules.