Biology Chapter on Cell Membrane Functions

To facilitate the movement of molecules across the membrane (correct)

To store energy for cellular processes

To synthesize proteins within the cell

To provide structural support to the cell

Both processes require ATP and transport proteins.

Exocytosis brings substances into the cell, while endocytosis expels substances out.

Exocytosis is a form of bulk transport out of the cell, whereas endocytosis is the bulk transport into the cell. (correct)

Endocytosis occurs in response to external signals, while exocytosis is a passive process.

A signaling molecule that interacts with a receptor (correct)

A molecule that cannot cross the plasma membrane

A receptor that binds to hormones

An ion that participates in enzyme reactions

<p>It selectively allows certain ions and molecules to cross while blocking others.</p> Signup and view all the answers

<p>A solution with a higher concentration of solutes than the cell, leading to water leaving the cell.</p> Signup and view all the answers

<p>Catabolic pathways involve energy release through breakdown, whereas anabolic pathways involve energy use for synthesis.</p> Signup and view all the answers

<p>The membrane consists of a lipid bilayer with embedded proteins that can move laterally.</p> Signup and view all the answers

<p>It releases energy used by the cell for various activities.</p> Signup and view all the answers