Membrane Structure and Function Quiz

• Separating internal cytoplasm from the external environment of the cell
• Controlling the movement of molecules into and out of the cell (correct)
• Regulating cell size
• Providing structural support to the cell

• Nonpolar, hydrophobic, fatty-acid tails sandwiched in between (correct)
• Cholesterol molecules forming a rigid structure
• Polar, hydrophilic, phosphate heads on the outer surface
• Proteins embedded in a matrix of carbohydrates

• Attached to the external surface of the membrane
• On the inner membrane surface
• Embedded within the hydrophobic interior of the lipid bilayer (correct)
• Floating freely in the cytoplasm

<p>Participate in cell signaling and recognition (B)</p> Signup and view all the answers

<p>Facilitate the movement of large or charged molecules across the membrane (D)</p> Signup and view all the answers