both photosynthesis and cellular respiration are part of the carbon cycle. which statement best compares…

both photosynthesis and cellular respiration are part of the carbon cycle. which statement best compares these two processes?\nboth release carbon dioxide as waste.\nboth provide organisms with usable energy.\nboth add bacteria to the soil.\nboth require fixation in order to convert molecules.

both photosynthesis and cellular respiration are part of the carbon cycle. which statement best compares these two processes?\nboth release carbon dioxide as waste.\nboth provide organisms with usable energy.\nboth add bacteria to the soil.\nboth require fixation in order to convert molecules.

Answer

Brief Explanations:

  • Photosynthesis: Converts light energy into chemical energy (glucose). The chemical equation is (6CO_{2}+6H_{2}O + light\rightarrow C_{6}H_{12}O_{6}+6O_{2}). It stores energy in the bonds of glucose.
  • Cellular respiration: Breaks down glucose to release energy. The chemical equation is (C_{6}H_{12}O_{6}+6O_{2}\rightarrow6CO_{2}+6H_{2}O+energy). The energy released is in the form of ATP, which is usable by cells.
  • Analysis of options:
    • Option 1: Photosynthesis takes in (CO_{2}) (not releases it as waste). Cellular respiration releases (CO_{2}). So this option is incorrect.
    • Option 2: Photosynthesis stores energy in glucose. Cellular respiration breaks down glucose to release energy as ATP (usable energy for cells). This option is correct.
    • Option 3: Neither photosynthesis nor cellular respiration directly adds bacteria to the soil. This option is incorrect.
    • Option 4: Nitrogen fixation is related to nitrogen - cycle (not directly to the core processes of photosynthesis and cellular respiration for carbon - cycle in the way described). This option is incorrect.

Answer:

Both provide organisms with usable energy.