In the cycling of matter between photosynthesis and cellular respiration, which four substances are recycled between these two processes?

• A. Carbon dioxide, water, glucose, and oxygen
• B. Nitrogen gas, ammonia, glucose, and oxygen
• C. ATP, NADPH, carbon dioxide, and water
• D. Chlorophyll, water, ATP, and oxygen

Answer: (A)

Verified step by step guidance

1. Understand that photosynthesis and cellular respiration are complementary processes in the cycling of matter and energy in ecosystems.
2. Identify the main inputs and outputs of photosynthesis: it uses carbon dioxide (CO\_2) and water (H\_2O) to produce glucose (C\_6H\_12O\_6) and oxygen (O\_2).
3. Identify the main inputs and outputs of cellular respiration: it uses glucose and oxygen to produce carbon dioxide, water, and energy (ATP).
4. Recognize that the substances recycled between these two processes are those that are outputs of one process and inputs of the other, specifically carbon dioxide, water, glucose, and oxygen.
5. Exclude substances that are not directly involved in the cyclical exchange between photosynthesis and cellular respiration, such as nitrogen gas, ammonia, ATP, NADPH, and chlorophyll.