Question

which substances do cells need to produce energy? check all that apply. oxygen water carbon dioxide suns energy sugar molecules

Explanation:

Cells produce energy primarily via cellular respiration, which requires oxygen (for aerobic respiration, the most efficient pathway) and sugar molecules (like glucose, the main energy source broken down to release ATP). Water and carbon dioxide are byproducts of this process, not inputs. Sun's energy is only used by photosynthetic organisms to make sugars, not directly by cells to produce energy.

Answer:

• oxygen
• sugar molecules