Which of the following occur without coupling transport of the solute to the movement of a second solute?
(a) import of glucose into gut epithelial cells
(b) export of Ca2+ from the cytosol
(c) export of H+ from animal cells for pH regulation
(d) the export of Na+from cells to maintain resting membrane potential
Ion Channels and the Membrane Potential
(b) Ca2+ is exported using ATP-powered pumps. There are no other solutes that are being moved by these pumps.
You might also like to view...
What forms the basis of a reef community?
a. Zooxanthellae b. Scleractinian corals c. Cnidocytes d. Corallites
Humans acquire their first microorganisms during ____
a. fetal development b. nursing c. vaginal delivery d. the first year of life e. exposure to the air
Cardiac muscle cells are
a. involuntary. b. spindle-shaped. c. multinucleated. d. slow contracting. e. all of these
Females who are heterozygous for a violence-associated mutation in the X-linked MAOA gene will display abnormal
behavior. a. True b. False