Exam 6: Interactions Between Cells and the Extracellular Environment

Which of the following is a function of the steep Na⁺/K⁺ gradient across the cell membrane?

Solutes that cannot freely pass through a membrane are said to be

80% of the extracellular fluid is termed as interstitial fluid.

A cell placed in a 9% saline solution (molecular weight = 58.5g)would

The amount of water in a cell placed in a 0.8 Osm solution would

Which of the following is able to passively penetrate the plasma membrane?

A solution freezing at -1.98^C

A six molar sucrose (molecular weight = 342g)solution would contain

Osmosis and simple diffusion do NOT require the actions of carrier proteins.

Where is the receptor for a nonpolar,lipid-soluble regulatory molecule?

Individuals suffering from cystic fibrosis have defective ____________ ion channels.

The rate of diffusion increases as the concentration gradient increases.

Which of the following is true of oral rehydration therapy?

What is necessary for a target cell to respond to a cell signaling molecule?

Which regulatory molecule cannot enter its target cell?

Hyperkalemia would ____________ the resting membrane potential of the cell.

Transport of materials through an epithelial cell is called

What cofactor do matrix metalloproteinases need to be functional?

Which of the following is NOT a G-protein?

The osmolality of plasma is