Which statement BEST describes a similarity and a difference between photosynthesis and cellular
respiration?
A. Photosynthesis and cellular respiration both use carbon dioxide to create energy, but while animal cells
respire it as a waste product, plant cells absorb it for their use.
B. Photosynthesis and cellular respiration both produce glucose molecules, but while cellular respiration
requires the ingestion of glucose in animal cells, plant cells are able to create their own during
photosynthesis.
C. Photosynthesis and cellular respiration both occur in the chloroplasts, but while photosynthesis only occurs
in plant cells, cellular respiration occurs in both plant and animal cells.
D. Photosynthesis and cellular respiration both produce energy, but while photosynthesis assembles glucose
molecules in plant cells, cellular respiration breaks down glucose molecules in plant and animal cells.

Option D. Photosynthesis and cellular respiration both produce energy, but while photosynthesis assembles glucose molecules in plant cells, cellular respiration breaks down glucose molecules in plant and animal cells.

Explanation:

Cellular Respiration: A catabolic reaction that occurs in the Mitochondria of all living organisms which involves breaking down glucose or sugar molecules using oxygen to release energy and carbon dioxide.
Photosynthesis: An anabolic reaction that occurs in the chloroplast of phototrophic plants involves the production of glucose in the presence of carbon dioxide to release oxygen.
The similarity between the two processes is that it involves the usage and production of energy and the exchange of gases.
The difference between the two processes is that while cellular respiration breaks down glucose to use in other biological activities, photosynthesis produces glucose as food for the plants.

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