#Question id: 2147
#XL - S Microbiology
Movement of water across membranes is facilitated by proteins called:
#Question id: 2148
#XL - S Microbiology
The specificity of the potassium channel for K+ over Na+ is mainly the result of the:
#Question id: 2149
#XL - S Microbiology
A ligand-gated ion channel (such as the nicotinic acetylcholine receptor) is:
#Question id: 2150
#XL - S Microbiology
Which of the following increase(s) membrane fluidity?
#Question id: 2151
#XL - S Microbiology
Which of the following statement(s) is (are) true of transmembrane proteins?
a. All contain a hydrophobic α helix.
b. Some serve as membrane attachment sites for peripheral membrane proteins.
c. Some contain more than one membrane-spanning domain.
d. All are asymmetrically oriented in the lipid bilayer.
#Question id: 2158
#XL - S Microbiology
Which of the following factors increase(s) the rate of simple (passive) diffusion of a solute across a phospholipid bilayer?