What is the reactant of respiration that is a product of photosynthesis?Group of answer choicesGlucoseCarbon dioxideNADHATP

To determine the reactant of respiration that is a product of photosynthesis, we should consider the processes involved in both photosynthesis and cellular respiration.

1. Photosynthesis Process:

   • During photosynthesis, plants convert carbon dioxide (CO₂) and water (H₂O) into glucose (C₆H₁₂O₆) and oxygen (O₂) using sunlight. The overall chemical equation for photosynthesis is: $6 \, CO_2 + 6 \, H_2O \xrightarrow{\text{light}} C_6H_{12}O_6 + 6 \, O_2$

2. Respiration Process:

   • Cellular respiration is the reverse process of photosynthesis, where glucose is broken down with oxygen to produce carbon dioxide, water, and energy (ATP). The overall chemical equation for cellular respiration is: $C_6H_{12}O_6 + 6 \, O_2 \rightarrow 6 \, CO_2 + 6 \, H_2O + \text{ATP}$

3. Identifying the Reactant:

   • In the context of the question, we are specifically looking for the reactant of respiration that is produced by photosynthesis. Among the choices provided:
     • Glucose: This is a product of photosynthesis and a reactant in respiration.
     • Carbon dioxide: This is a product of respiration and not a relevant reactant from photosynthesis.
     • NADH: This is a product of cellular respiration and not related to photosynthesis.
     • ATP: This is an energy carrier produced during respiration.

Final Answer

The reactant of respiration that is a product of photosynthesis is Glucose.