Plasma Membrane Study Guide

What is the plasma membrane also known as?

Cell membrane or phospholipid bilayer.

What are the two main types of proteins found in the plasma membrane?

Transmembrane (integral) proteins and peripheral proteins.

What is the function of carbohydrates in the plasma membrane?

For cell recognition and communication.

What helps maintain the flexibility and stability of the plasma membrane?

Cholesterol.

What does the Fluid Mosaic Model describe?

The structure and dynamic workings of the plasma membrane.

What is selective permeability?

The ability of the plasma membrane to control what enters and exits the cell.

What is active transport?

Movement of substances against the concentration gradient using energy (ATP).

What does osmosis refer to?

Movement of water across a membrane toward a higher solute concentration.

What occurs in a hypotonic solution?

Water moves into the cell, causing it to swell and possibly burst.

What are two examples of bulk transport in cells?

Endocytosis and Exocytosis.