Facilitated diffusion flashcard sets

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1-1 of 1Facilitated diffusion flashcard sets
# Title Terms Date
1Cell Transportby hollystevens18 termsOctober 27, 2009
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facilitated diffusion definitions
# Definition Sets
1movement of specific molecules across cell membranes through protein channels134 sets
2the transport of substances through a cell membrane along a concentration gradient with the aid of carrier proteins42 sets
3many polar molecules and ions impeded by the lipid bilayer of a membrane diffuse passively with the help of transport proteins that span the membrane31 sets
4pathway provided by transport proteins that helps certain molecules pass through a membrane25 sets
5when substances transport across cell membranes using protein carrier molecules18 sets
6the spontaneous passage of molecules and ions, bound to specific carrier proteins, across a biological membrane down their concentration gradients.15 sets
7passive transport of materials across a plasma membrane by transport proteins embedded in the plasma membrane13 sets
8the transport of substances through a cell membrane along a concentration gradient with the aid of carrier proteins.11 sets
9the spontaneous passage of molecules and ions, bound to specific carrier proteins, across a biological membrane down their concentration gradients10 sets
10a process in which substances move down their concentration gradient across the cell membrane with the assistance of carrier proteins9 sets
11transport proteins provide a pathway for certain molecules to pass9 sets
12movement of molecules through protein channels in the membrane from high to low concentration8 sets
13movement of specific molecules across cell membranes through protein channels.7 sets
14the movement of molecules across a membrane with the help of protein molecules7 sets
15the spontaneous passage of molecules or ions across a biological membrane with the assistance of specific transmembrane transport proteins.7 sets
16the passage of a substance across a biological membrane down its concentration gradient, aided by specific transport proteins.7 sets
17polar substances that cannot pass through the nonpolar cell wall are moved across by protein pumps or proteins that pull through the membrane, no energy is required7 sets
18the passage of a substance through a specific transport protein across a biological membrane down its concentration gradient.6 sets
19transport of substances through a cell membrane down a concentration gradient aided by carrier proteins6 sets
20movement of molecules across a cell membrane through protein channels5 sets
21a form of diffusion that requires the assistance of a transport protein5 sets
22this process is used for molecules that cannot readily diffuse through the cell membrane5 sets
23what is the diffusion of solutes or water through channel proteins in the plasma membrane?4 sets
24diffusion through selective pores4 sets
251. doesn't require energy 2. goes down the concentraion gradient4 sets
26water diffuses by3 sets
27the spontaneous passage of molecules or ions across a biological membrane with the assistance of specific transmembrane transport proteins3 sets
28transport proteins speed the passive movement of molecules across the plasma membrane3 sets
29a process by which substances are moved across a cell membrane down their concentration gradient using a protein carrier.3 sets
30diffusion of molecules assisted by protein channels that pierce a cell membrane3 sets
31a process in which substances are transported across cell membranes by means of protein carrier molecules3 sets
32the passage of a substance across a biological membrane down its concentration gradient, aided by specific transport proteins3 sets
33involves the use of a protein to facilitate the movement of molecules across the membrane. in some cases, molecules pass through channels within the protein.3 sets
34the passive movement of molecules down their concentration gradient via transport proteins3 sets
35the transport of substances through a cell membrane along a concentration gradient with the aid of carrier protiens3 sets
36passive transport of materials across the membrane using transport proteins3 sets
37molecules move through protein channels instead of a membrane3 sets
38movement of molecules with the assistance of a carrier molecule3 sets
39movement of specific molecules across cell membranes though protein channels3 sets
40the diffusion of molecules across a membrane through transport proteins3 sets