Question

process : endergonic
reactants
organelle:
products
cycling of
organelle:
exergonic
process :
reactants
products

Explanation:

This diagram shows the cycling of energy and molecules between photosynthesis (in chloroplasts, endergonic, using sunlight) and cellular respiration (in mitochondria, exergonic). For the top (photosynthesis):

• Organelle: Chloroplast (the stacked structure is thylakoids in chloroplasts).
• Process: Photosynthesis (endergonic, uses light energy).
• Reactants: Carbon dioxide ($\ce{CO_2}$) and water ($\ce{H_2O}$).
• Products: Glucose ($\ce{C_6H_{12}O_6}$) and oxygen ($\ce{O_2}$).
• Cycling of: Oxygen and glucose (products of photosynthesis become reactants for respiration) and carbon dioxide and water (products of respiration become reactants for photosynthesis), also energy (light energy to chemical in photosynthesis, chemical to ATP in respiration).

For the bottom (cellular respiration):

• Organelle: Mitochondrion (the folded inner membrane structure is characteristic of mitochondria).
• Process: Cellular Respiration (exergonic, releases energy).
• Reactants: Glucose ($\ce{C_6H_{12}O_6}$) and oxygen ($\ce{O_2}$).
• Products: Carbon dioxide ($\ce{CO_2}$), water ($\ce{H_2O}$), and ATP (energy).

Answer:

Top Section (Photosynthesis - Chloroplast):

• Organelle: Chloroplast
• Process: Photosynthesis
• Reactants: $\boldsymbol{\ce{CO_2}}$ (Carbon Dioxide), $\boldsymbol{\ce{H_2O}}$ (Water)
• Products: $\boldsymbol{\ce{C_6H_{12}O_6}}$ (Glucose), $\boldsymbol{\ce{O_2}}$ (Oxygen)

Bottom Section (Cellular Respiration - Mitochondrion):

• Organelle: Mitochondrion
• Process: Cellular Respiration
• Reactants: $\boldsymbol{\ce{C_6H_{12}O_6}}$ (Glucose), $\boldsymbol{\ce{O_2}}$ (Oxygen)
• Products: $\boldsymbol{\ce{CO_2}}$ (Carbon Dioxide), $\boldsymbol{\ce{H_2O}}$ (Water), $\boldsymbol{\text{ATP}}$ (Energy)

Cycling Of:

• Molecules: $\ce{O_2}$ (Oxygen) and $\ce{C_6H_{12}O_6}$ (Glucose) (from photosynthesis) cycle to respiration; $\ce{CO_2}$ (Carbon Dioxide) and $\ce{H_2O}$ (Water) (from respiration) cycle to photosynthesis.
• Energy: Light energy (photosynthesis) $

ightarrow$ Chemical energy (glucose) $
ightarrow$ ATP (respiration).