Author: Anonymous

Most transmembrane proteins have ___________ regions facing the intra- and extracellular fluid, and __________ regions embedded in the phospholipid bilayer.

The most abundant molecules in the plasma membrane are __________.

__________ is the process in which __________ forces water and small solutes, such as salts, through narrow clefts between capillary cells.

The term _____________ refers to a membrane that allows some things to pass through it, but not others.

The pH of blood plasma is approximately 7.4, which is slightly acidic.

Which of the following does not affect the rate of diffusion?

In this feedback loop, what is the receptor?

The constant appearance of new strains of influenza virus is an example of __________.

__________ provide motility to a sperm cell, __________ act as sensory “antennae” in many cells, and ____________ increase a cell’s surface area.

A solution that resists a change in pH when an acid or base is added to it is a(n) __________.