Which is FALSE about the equilibrium potential of a given ion across a membrane?
A. It is a function of the concentration of that ion on both sides of the membrane.
B. It is the potential difference across the membrane at which an electric force favoring movement of the ion in one direction is equal in magnitude and opposite in direction to the diffusion force provided by the concentration difference of the ion across the membrane.
C. It is the potential at which there is no net movement of that ion across the membrane.
D. A permeable ion will move in the direction that will tend to bring the membrane potential toward that ion's equilibrium potential.
E. An anion that is in higher concentration inside the cell than outside the cell will have a negative equilibrium potential.
Answer: E
You might also like to view...
What is the defining characteristic of an allosteric protein?
A. They contain two ligand-binding sites, one that activates the protein when a ligand binds, and the other that inactivates the protein when the same ligand binds. B. They contain only one ligand-binding site, but because the specificity is low, many different ligands can bind to it. C. They contain two polypeptide chains, with each being an exact mirror image of the other. D. They contain more than one ligand-binding site, and noncovalent binding of a ligand to one site alters the shape of other ligand-binding sites. E. They contain no binding sites of their own, but act by modulating the activity of other proteins.
Cystectomy is a procedure that involves which of the following?
A) resection of the urinary bladder B) incision of the urinary bladder C) inflammation of the urinary bladder D) herniation of the urinary bladder
Tingling, burning, and crawling of the skin would be called _____.?
A) ?sciatica B) ?neuralgia C) ?paresthesia
The outermost extraembryonic membrane that eventually helps form the placenta is the
A. hypoblast. B. yolk sac. C. chorion. D. amnion.