Question

What do you notice about the relationship between photosynthesis and cellular respiration?

A: They have the same products.

B: They have the same reactants.

C: They are the opposite reactions.

D: They happen in the same organelles.

Answer 1

Answer: C: They are the opposite reactions.

Step-by-step explanation:

Photosynthesis: In photosynthesis, plants, algae, and some bacteria convert carbon dioxide and water into glucose and oxygen using energy from sunlight. This process stores energy in the form of glucose.

6 CO₂ + 6 H₂O + light energy → C₆H₁₂O₆ + 6 O₂

Cellular Respiration: In cellular respiration, cells break down glucose and oxygen to produce carbon dioxide, water, and energy in the form of ATP (adenosine triphosphate). This process releases the stored energy in glucose.

C₆H₁₂O₆ + 6 O₂ → 6 CO₂ + 6 H₂O + energy (in the form of ATP)

These two processes are crucial for the energy balance of living organisms and are interconnected in the carbon cycle, where the products of one process are used as the reactants of the other.