Exam 5: Membranes and Transport

In order to visualize LDL entry into the cell, researchers tagged the LDL with which heavy metal?

The voltage across a membrane is called the ____.

Pinocytosis and phagocytosis are accomplished in the cell by the ____.

A red blood cell placed in a beaker of solution immediately begins to swell and ultimately bursts. This occurs because the cytoplasm of the cell was ____ to the solution in the beaker, which was ____.

The "mosaic" part of the fluid mosaic model refers to the membrane ____.

The net movement of molecules or ions from a low concentration to a higher concentration is called ____.

A hypertonic environment would be ideal for a healthy plant.

Distilled water is ____ to body cells.

Glycolipids and glycoproteins form a surface coat on the outside of the cell surface called a ____, which protects the cell against chemical and mechanical damage.

The polar end of a phospholipid contains a phosphate group bound to ____, while the nonpolar end contains ____.

Which proteins in the plasma membrane identify a cell as part of the same individual or as foreign?

What happens when the concentrations of a solute that can freely diffuse across a membrane are equal inside and outside the cell?

What is the energy source for facilitated diffusion?

Which proteins form channels in the membrane that allow selected polar molecules and ions to pass through and across the membrane?

Which proteins recognize and bind molecules from other cells that act as chemical signals?

Which proteins would be considered peripheral membrane proteins?

In patients with familial hypercholesterolemia, which cellular process is inhibited?

The ____ component of the cell membrane functions as a selective barrier, while the ____ component has specific functions such as transport, recognizing other cells, and binding to other cells.