All of the Following Are True of the Plasma Membrane

question 11

Multiple Choice

All of the following are true of the plasma membrane, except

• A)it is mainly composed of a phospholipid bilayer.
• B)it is selectively permeable to various substances, controlling which substances can cross the membrane.
• C)the glycocalyx provides structural integrity to the plasma membrane.
• D)transmembrane proteins may function as ion channels, enzymes, or receptors.
• E)charged or large molecules can sometimes enter a cell via membrane proteins.

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Definitions:

Polar Nature

Refers to the characteristic of molecules having electrical or magnetic polarity, with distinct positive and negative ends.

Halite

Also known as rock salt, it is a mineral composed primarily of sodium chloride and forms through the evaporation of saline waters.

Water Molecule

A chemical entity consisting of one oxygen and two hydrogen atoms, connected by covalent bonds, essential for most forms of life.

Electronegativity

A measure of an atom's ability to attract and hold electrons within a chemical bond.