Question

photosynthesis vs. respiration
cellular respiration and photosynthesis can be thought of as opposite processes. energy
flows in opposite directions in the two processes.
complete the table using the phrases listed below:
green plant cells chloroplast release energy from food
co₂ + h₂o + atp glucose + o₂ all cells
mitochondria capture & store energy glucose + o₂
co₂ + h₂o + light

1. write the equation for each process:

a. photosynthesis:
b. respiration:

1. which process:

a. releases energy for the cell?
b. stores energy for the cell?

1. what type of energy:

a. is used to make food during photosynthesis?
b. is made during respiration?

1. how do the products of photosynthesis compare to the reactants of respiration?

Explanation:

• Photosynthesis:
• Purpose: Capture & Store energy.
• Cell type: Green plant cells.
• Organelle: Chloroplast.
• Reactants: \(CO_2 + H_2O+light\).
• Products: \(Glucose + O_2\).
• Equation: \(6CO_2 + 6H_2O+light

ightarrow C_6H_{12}O_6 + 6O_2\).

• Respiration:
• Purpose: Release energy from food.
• Cell type: All cells.
• Organelle: Mitochondria.
• Reactants: \(Glucose + O_2\).
• Products: \(CO_2 + H_2O + ATP\).
• Equation: \(C_6H_{12}O_6 + 6O_2

ightarrow 6CO_2 + 6H_2O+ATP\).

• 2a: Respiration releases energy for the cell.
• 2b: Photosynthesis stores energy for the cell.
• 3a: Light energy is used to make food during photosynthesis.
• 3b: Chemical energy (ATP) is made during respiration.
• 4: The products of photosynthesis (\(Glucose + O_2\)) are the reactants of respiration.

Answer:

• Table:
• Photosynthesis - Purpose: Capture & Store energy
• Photosynthesis - Cell type: Green plant cells
• Photosynthesis - Organelle: Chloroplast
• Photosynthesis - Reactants: \(CO_2 + H_2O+light\)
• Photosynthesis - Products: \(Glucose + O_2\)
• Respiration - Purpose: Release energy from food
• Respiration - Cell type: All cells
• Respiration - Organelle: Mitochondria
• Respiration - Reactants: \(Glucose + O_2\)
• Respiration - Products: \(CO_2 + H_2O + ATP\)
• 1a: \(6CO_2 + 6H_2O+light

ightarrow C_6H_{12}O_6 + 6O_2\)

• 1b: \(C_6H_{12}O_6 + 6O_2

ightarrow 6CO_2 + 6H_2O+ATP\)

• 2a: Respiration
• 2b: Photosynthesis
• 3a: Light energy
• 3b: Chemical energy (ATP)
• 4: The products of photosynthesis (\(Glucose + O_2\)) are the reactants of respiration.