Which process involves the conversion of light energy into chemical energy?

Which process involves the conversion of light energy into chemical energy?

• A. Cellular respiration
• B. Fermentation
• C. Photosynthesis
• D. Transcription

Answer: (C)

Photosynthesis is the process in which light energy is converted into chemical energy, specifically in the form of glucose. This process primarily occurs in plants, algae, and some bacteria. During photosynthesis, chlorophyll and other pigments in the chloroplasts capture sunlight and use that energy to convert carbon dioxide and water into glucose and oxygen. The overall reaction can be summarized by the equation: 6 CO₂ + 6 H₂O + light energy → C₆H₁₂O₆ + 6 O₂. This stored chemical energy in glucose can later be used in cellular respiration to produce ATP, the energy currency of the cell. Cellular respiration, fermentation, and transcription do not involve the conversion of light energy into chemical energy. Cellular respiration is the process by which cells break down glucose to produce ATP, fermentation is an anaerobic process of energy production that does not utilize light, and transcription is the process of synthesizing RNA from a DNA template, which is unrelated to energy conversion. Thus, photosynthesis is uniquely characterized by its ability to harness light energy and convert it into a usable chemical form.

Photosynthesis is the process in which light energy is converted into chemical energy, specifically in the form of glucose. This process primarily occurs in plants, algae, and some bacteria. During photosynthesis, chlorophyll and other pigments in the chloroplasts capture sunlight and use that energy to convert carbon dioxide and water into glucose and oxygen. The overall reaction can be summarized by the equation:

6 CO₂ + 6 H₂O + light energy → C₆H₁₂O₆ + 6 O₂.

This stored chemical energy in glucose can later be used in cellular respiration to produce ATP, the energy currency of the cell.

Cellular respiration, fermentation, and transcription do not involve the conversion of light energy into chemical energy. Cellular respiration is the process by which cells break down glucose to produce ATP, fermentation is an anaerobic process of energy production that does not utilize light, and transcription is the process of synthesizing RNA from a DNA template, which is unrelated to energy conversion. Thus, photosynthesis is uniquely characterized by its ability to harness light energy and convert it into a usable chemical form.