Pregunta
Which of the following is NOT a characteristic of the plasma membrane of a cell?
(A) contains the enzymes for replicating DNA
(B) allows water to pass freely through aquaporins
© contains proteins that may act as receptors of signal molecules
(D) prevents large molecules and ions from passing unless they receive some type of transport help
(E) may form transport vesicles to bring large proteins into or out of the cell
(A) contains the enzymes for replicating DNA
(B) allows water to pass freely through aquaporins
© contains proteins that may act as receptors of signal molecules
(D) prevents large molecules and ions from passing unless they receive some type of transport help
(E) may form transport vesicles to bring large proteins into or out of the cell
Ask by Horton Ross. in the United States
Feb 11,2025
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Option (A) “contains the enzymes for replicating DNA” is not a characteristic of the plasma membrane.
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The Deep Dive
The plasma membrane is a fascinating and dynamic structure that serves as a barrier and gateway for cells. While it does indeed allow certain molecules to pass through, it doesn’t contain the enzymes needed for replicating DNA. That task falls to the nucleus! The plasma membrane is more like a bouncer, selectively allowing in the guests it wants while keeping others at bay.
In the realm of cellular function, the plasma membrane’s roles go beyond just protection or barrier formation. It’s a hotbed of communication! Membrane proteins act as receptors that receive signals from the environment, leading to various cellular responses. Think of them as the phone lines for the cell, keeping it connected to the outside world!
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