Question

during exercise, muscles need more oxygen and release more carbon dioxide. how does the cell membrane help muscle cells maintain homeostasis in this situation? it traps extra carbon dioxide so it doesnt leave the cell it controls the exchange of gases into and out of the cell it produces new mitqchondria to handle the stress it makes energy directly from oxygen

Explanation:

1. Analyze the first option: The cell membrane is selectively permeable and does not trap carbon dioxide; instead, it allows for gas exchange. So this option is incorrect.
2. Analyze the second option: The cell membrane's function includes regulating the movement of substances, including gases like oxygen and carbon dioxide, in and out of the cell. During exercise, muscle cells need more oxygen (to come in) and release more carbon dioxide (to go out), and the cell membrane controls this exchange to maintain homeostasis. This option is correct.
3. Analyze the third option: Mitochondria production is not a function of the cell membrane. Mitochondria are organelles, and their production or increase in number is related to cellular processes but not the cell membrane's role. So this option is incorrect.
4. Analyze the fourth option: The cell membrane does not make energy directly from oxygen. Energy production (like in cellular respiration) occurs in organelles like mitochondria, not the cell membrane. So this option is incorrect.

Answer:

B. It controls the exchange of gases into and out of the cell (assuming the second option is labeled as B; if the original options had different labels, adjust accordingly based on the visual, but from the text, the correct description is "It controls the exchange of gases into and out of the cell")