Question

how does an animal regulate ph levels?
a. by increasing sugar intake
b. by increasing water intake
c. by using buffer systems inside the organism
d. by relying only on the local environment

Explanation:

• Option A: Increasing sugar intake does not regulate pH levels. Sugar is mainly related to energy supply and metabolism in a different context.
• Option B: Increasing water intake mainly affects hydration levels and fluid balance, not directly pH regulation.
• Option C: Buffer systems (such as bicarbonate - carbonic acid buffer in animals) can resist changes in pH by absorbing excess acids or bases. This is a key mechanism for pH regulation in organisms.
• Option D: Relying only on the local environment is incorrect as organisms have internal mechanisms (like buffer systems) for pH regulation rather than just depending on the external environment.

Answer:

C. by using buffer systems inside the organism