Chapter 6 - Movement of Water in Cells 

plasma membrane

Proteins in the ________ perform a variety of activities, including material transport, cell signaling, attaching the cell to its environment, and catalyzing chemical reactions.

Glycoproteins

________ and glycolipids play important roles in cell recognition.

surface area

The ________ to volume ratio of a cell is an important component in influencing the cell's capacity to perform these functions.

Plasma

________ (or cell) membranes are selectively permeable, which implies that certain materials may pass through while others can not.

freshwater paramecium

A(n) ________ has a greater internal solute content and a lower water potential than its surroundings.

plasma membrane

The ________ is composed of a phospholipid bilayer.

Plasma membranes

________ are crucial in helping cells to maintain a suitable interior environment for existence.

plasma membrane

Steroids in the ________ can change the fluidity of the membrane in response to changing environmental circumstances and cell demands.