Question

photosynthesis vs. respiration
cellular respiration and photosynthesis can be thought of as opposite processes. they flow 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
co₂ + h₂o + light
glucose + o₂

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 (as per the given phrase).
• Cell type: Green plant cells (since photosynthesis occurs in plant cells that have chloroplasts).
• Organelle: Chloroplast (the site of photosynthesis).
• Reactants: \(CO_2 + H_2O+light\) (carbon - dioxide, water, and light are the starting materials).
• Products: \(Glucose + O_2\) (glucose is synthesized, and oxygen is released).
• Respiration:
• Purpose: Release energy from food (as per the given phrase).
• Cell type: All cells (all living cells carry out respiration to get energy).
• Organelle: Mitochondria (the powerhouse of the cell, where respiration occurs).
• Reactants: \(Glucose + O_2\) (glucose and oxygen are used).
• Products: \(CO_2 + H_2O+ATP\) (carbon - dioxide, water, and ATP (energy currency) are produced).
• Equations:
• Photosynthesis: \(6CO_2+6H_2O + light

ightarrow C_6H_{12}O_6 + 6O_2\) (using the reactants and products from above, balanced for simplicity).

• Respiration: \(C_6H_{12}O_6+6O_2

ightarrow 6CO_2 + 6H_2O+ATP\) (balanced equation for aerobic respiration).

• Processes related to energy:
• Releases energy: Respiration (as its purpose is to release energy from food).
• Stores energy: Photosynthesis (captures and stores energy in glucose).
• Energy types:
• Used to make food: Light energy (used in photosynthesis).
• Made during respiration: Chemical energy (in the form of ATP).
• Product - reactant comparison: The products of photosynthesis (\(Glucose + O_2\)) are the reactants of respiration, and vice - versa (the products of respiration (\(CO_2 + H_2O\)) are the reactants of photosynthesis).

Answer:

	PHOTOSYNTHESIS	RESPIRATION
What type of cells do this?	Green plant cells	All cells
What organelle in the cell does this?	Chloroplast	Mitochondria
Reactants	\(CO_2 + H_2O+light\)	\(Glucose + O_2\)
Products	\(Glucose + O_2\)	\(CO_2 + H_2O+ATP\)

| 1. a. Photosynthesis equation | \(6CO_2+6H_2O + light
ightarrow C_6H_{12}O_6 + 6O_2\) | |

1. b. Respiration equation

\(C_6H_{12}O_6+6O_2

ightarrow 6CO_2 + 6H_2O+ATP\) |

2. a. Releases energy		Respiration
2. b. Stores energy	Photosynthesis
a. Energy used to make food	Light energy
b. Energy made during respiration		Chemical energy (ATP)
3. Products of photosynthesis vs reactants of respiration	The products of photosynthesis (\(Glucose + O_2\)) are the reactants of respiration