BiologyMultiple Choice
The cell's plasma membrane mediates which of the following transactions with the environment? Choose all that apply.
Check All That Apply
Ingesting food molecules and sometimes entire cells
Returning waste and other molecules back to the environment
Responding to a host of chemical cues
Directing synthesis of various food-digesting proteins
✨ Quizard's Answer
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ENone of the above
Explanation:
The plasma membrane of a cell plays a crucial role in mediating various transactions with the environment. Let's analyze each option to determine which ones are correct.
Option A: Ingesting food molecules and sometimes entire cells. This is correct. The plasma membrane contains specialized structures like transport proteins that allow the cell to take in nutrients and even engulf other cells through a process called endocytosis.
Option B: Returning waste and other molecules back to the environment. This is also correct. The plasma membrane is involved in the excretion of waste products and the release of molecules that are no longer needed by the cell.
Option C: Responding to a host of chemical cues. This is correct as well. The plasma membrane contains receptors that can detect and respond to various chemical signals from the environment, allowing the cell to adapt and respond to changes in its surroundings.
Option D: Directing synthesis of various food-digesting proteins. This option is incorrect. The synthesis of proteins, including food-digesting proteins, is primarily directed by the cell's genetic material (DNA) and occurs in the cell's cytoplasm, not at the plasma membrane.
Therefore, the correct answers are A, B, and C. These options accurately describe the transactions mediated by the cell's plasma membrane.
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