How are channel proteins different from carrier proteins? O Carier proteins are more specific than channel proteins O Channel proteins allow more rapid movement of substances across the membrane than do carrier proteins O Channel proteins are less specific than carrier proteins O Carrier proteins require more time for diffusion to occur than to channel proteins O All of these answers are correct

How are channel proteins different from carrier proteins? O Carier proteins are more specific than channel proteins O Channel proteins allow more rapid movement of substances across the membrane than do carrier proteins O Channel proteins are less specific than carrier proteins O Carrier proteins require more time for diffusion to occur than to channel proteins O All of these answers are correct

Human Physiology: From Cells to Systems (MindTap Course List)

9th Edition

ISBN:9781285866932

Author:Lauralee Sherwood

Publisher:Lauralee Sherwood

Chapter3: The Plasma Membrane And Membrane Potential

Section: Chapter Questions

Problem 2TAHL: Assume that a membrane permeable to Na+ but not to Cl- separates two solutions. The concentration of...

See similar textbooks

Similar questions

Which of the following statements about ion channels is INCORRECT? Like carrier proteins, most channel proteins are specific regarding which molecules are allowed to pass. Channel proteins can have open or closed configurations. Unlike carrier proteins, some channel proteins are engaged in active transport of solutes. Channel proteins are used extensively in nerve cells, in which they are responsible for transduction of electrical signals. Compared to carrier proteins, channel proteins allow much faster transport.
A solution of water and dissolved ions is separated by a selectively permeable membrane that allows the passage of water but not small ions. The concentration of sodium is higher on one side of the membrane than onthe other side. However, there is no net movement of water across the membrane. How is this possible?
The neuron membrane includesa lipid bilayer.channel proteins.signal proteins.all of the aboveboth A and B
a. integral memebrane protein that crosses membrane multiple time b. lipid-linked membrane proteins c. peripheral memebrane protein d. integral memebrane protein that crosses membrane ince
Passive transport across the membrane mediated by a carrier— would not be saturated by increasing amount of substance to be transported. does not require energy (ATP). can be driven in reverse. moves the solute through the membrane in the “uphill” direction of their concentration gradient. is faster than transport mediated by channel proteins.
List two ways that channels differ from transporters? What type of molecules do channels usually transport?
Cell swelling will most directly affect which type of channel protein? Group of answer choices Mechanically gated ion channel Ligand-gated ion channel Ligand-gated ion channel with intracellular ligand binding site Voltage-gated ion channel
When the nerves deliver a signal to contract, Ca++ (calcium ions) rush into the cell. The calcium ion influx causes specialized fibers to contract. Afterward, calcium ions are pumped out of the cell by calcium ATPases. What transport type(s) is occuring?s antiporter only ion gated transport followed by active transport active transport only ion gated transport only active transport followed by ion gated transport
Which of the following integral membrane protein is a special class of membrane rafts?a) Caveolinb) Integrinc) Cadherind) Selectin
The fluid mosaic model of membrane structure has been very useful in explaining membrane behavior. However, the description of membrane as proteins floating in a phospholipid sea is oversimplified. Describe some components of membrane that are restricted in their lateral motion.
A 500mL beaker is equally divided by a membrane permeable only to NaCl. Side A contains 250mL of a 1x10-6M of NaCl. Side B contains 250mL 1x10-12M of NaCl. In which direction will the NaCl diffuse? Select one: a. Diffuse Side A to Side B. b. Diffuse Side B to Side A. c. No diffusion will occur; it is already at equilibrium.
one reason active transport has a limited maximum transport rate at which it can progress is due to the fact that a. energy required is not available inside the cell b. carrier proteins are not on the surface of the cell membrane c. ion channels are limited in size d. the number of carrier proteins is limited and therefore they can become saturated