Question

respiration and photosynthesis both involve oxygen, carbon dioxide, water, glucose, and energy. which is an activity of respiration?
a. glucose molecules are formed.

b. carbon dioxide reacts with water.

c. light energy is converted to heat energy.

d. carbon dioxide is produced and released.

Explanation:

• Option A: Glucose formation is part of photosynthesis, not respiration.
• Option B: Carbon dioxide reacting with water is in photosynthesis (for carbon fixation), not respiration.
• Option C: Respiration converts chemical energy (from glucose) to ATP (and some heat), not light to heat.
• Option D: Respiration breaks glucose, producing \(CO_2\) (released), which matches.

Answer:

D. Carbon dioxide is produced and released.