Question

Which of the following statements best describes the principle of mass balance?
a. The amount of a variable that is gained by the body through ingestion equals the amount that is lost from the body.
b. The body maintains a stable mass at all times.
c. The amount of each variable brought into the body must be balanced by all other variables.
d. The amount of a variable ingested is regulated by a positive feedback loop.

Accepted Answer

Understand the concept of mass balance: Mass balance refers to the principle that the total amount of a substance in the body remains constant unless there is an input (gain) or output (loss) of that substance. This is crucial for maintaining homeostasis in the body. Analyze the options provided: Each option describes a different interpretation of mass balance. Carefully evaluate which one aligns with the principle of maintaining equilibrium in the body. Option a: This option states that the amount of a variable gained through ingestion equals the amount lost. This aligns with the principle of mass balance, as it emphasizes the balance between input and output. Option b: This option suggests that the body maintains a stable mass at all times. This is incorrect because the body’s mass can fluctuate due to various factors, such as water retention or fat storage, and is not directly related to the principle of mass balance. Option c and d: Option c implies that all variables must balance each other, which is not accurate since mass balance focuses on individual variables. Option d mentions regulation by a positive feedback loop, which is incorrect because mass balance is typically maintained by negative feedback mechanisms.

비슷한 문제에 대한 검증된 영상 답변:

주요 개념

Mass Balance Principle

Homeostasis

Feedback Mechanisms