Question

Which of the following statements accurately describes the relationship between photosynthesis and cellular respiration?

• A. photosynthesis occurs only in autotrophs; cellular respiration occurs only in heterotrophs
• B. photosynthesis uses solar energy to convert inorganic compounds to energy-rich organic compounds; respiration breaks down these organic compounds to synthesize ATP
• C. photosynthesis involves the oxidation of glucose; respiration involves the reduction of CO2
• D. the primary function of photosynthesis is to use solar energy to synthesize ATP; the primary function of cellular respiration is to break down ATP and release energy

Answer 1

The correct option is B

photosynthesis uses solar energy to convert inorganic compounds to energy-rich organic compounds; respiration breaks down these organic compounds to synthesize ATP

Cellular respiration can be considered as the reverse process of photosynthesis. While photosynthesis uses the basic organic compounds such as carbon dioxide and water to synthesize glucose and release oxygen, in cellular respiration glucose is broken down in presence of oxygen into carbon dioxide and water once again.