Question

question: 25 which statement describes the relationship between breathing and cellular respiration in animals? a. carbon dioxide is inhaled and is a product of cellular respiration. b. carbon dioxide is exhaled and is a product of cellular respiration. c. carbon dioxide is exhaled and is a reactant of cellular respiration. d. cellular respiration and breathing are the same processes

Explanation:

• Option A: Animals inhale oxygen, not carbon dioxide, so A is wrong.
• Option B: Cellular respiration produces \(CO_2\) (formula: \(C_6H_{12}O_6 + 6O_2

ightarrow 6CO_2 + 6H_2O + \text{energy}\)), and breathing exhales this \(CO_2\). This matches the relationship.

• Option C: \(CO_2\) is a product, not a reactant, of cellular respiration (reactants are glucose and \(O_2\)), so C is wrong.
• Option D: Breathing is gas exchange (inhale/exhale), cellular respiration is energy production in cells—different processes, so D is wrong.

Answer:

B. Carbon dioxide is exhaled and is a product of cellular respiration.