Which statement correctly distinguishes photosynthesis and respiration?

A. Photosynthesis occurs in animal cells and not plant cells.
B. Cellular respiration occurs in animal cells and not plant cells.
C. Photosynthesis uses chemical energy as the energy source, and cellular respiration uses light energy.
D. Photosynthesis uses light as the energy source, and cellular respiration uses chemical energy.

Photosynthesis and cellular respiration are distinct processes involving different energy sources: photosynthesis uses light energy to produce glucose in plant cells, while cellular respiration converts glucose into energy in both plant and animal cells. The correct distinction is that photosynthesis uses light as an energy source, while respiration uses chemical energy. This understanding is crucial for grasping how living organisms create and utilize energy.

Explanation:

Distinguishing Photosynthesis and Cellular Respiration

Photosynthesis and cellular respiration are fundamental biochemical processes that sustain life on Earth. Here's how they differ:

Photosynthesis: This process occurs primarily in plant cells, where organisms convert light energy (usually from the sun) into chemical energy stored in glucose. The general equation for photosynthesis can be summarized as:

6H12O6 + 6O2 6H12O6 + 6O2.

Cellular Respiration: This process occurs in both animal and plant cells and involves the conversion of glucose into usable energy (ATP) by breaking it down in the presence of oxygen. The general equation for cellular respiration can be represented as:

6O2 + C6H12O6 6H12O6 + 6O2.

Therefore, the correct statement that distinguishes photosynthesis and respiration is: Photosynthesis uses light as energy source, and cellular respiration uses chemical energy.

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