1. When all the protein carriers are used up, the carriers are said to be A. Adapted B. Unsaturated C. Saturated D. Consumed 2. The proteins that constantly transport sodium ions outside the membrane is called A. Membrane pump B. Calcium-potassium pump C. Sodium-potassium pump D. Glucose-potassium pump E. Protein-potassium pump 3. The process in the question above gets its energy from A. ADP B. ACT C. PTA D. ATP E. TPA

1. When all the protein carriers are used up, the carriers are said to be A. Adapted B. Unsaturated C. Saturated D. Consumed 2. The proteins that constantly transport sodium ions outside the membrane is called A. Membrane pump B. Calcium-potassium pump C. Sodium-potassium pump D. Glucose-potassium pump E. Protein-potassium pump 3. The process in the question above gets its energy from A. ADP B. ACT C. PTA D. ATP E. TPA

Concepts of Biology

1st Edition

ISBN:9781938168116

Author:Samantha Fowler, Rebecca Roush, James Wise

Publisher:Samantha Fowler, Rebecca Roush, James Wise

Chapter3: Cell Structure And Function

Section: Chapter Questions

Problem 12RQ: Water moves via osmosis _______. a. throughout the cytoplasm b. from an area with a high...

See similar textbooks

Similar questions

The sodium–potassium pumpa. helps establish an electrochemical gradient across the membrane.b. concentrates sodium on the outside of the membrane.c. uses a carrier protein and chemical energy.d. is present in the plasma membrane.e. All of these are correct.
Compare channels and transporters. Channels are __________, and transporters are __________. Select one: a. slower, more selective b. Less selective, slower c. faster, less selective d. slower, less selective e. more selective, faster
The proteins that constantly transport sodium ions outside the membrane is called A. Membrane pump B. Calcium-potassium pump C. Sodium-potassium pump D. Glucose-potassium pump E. Protein-potassium pump The process in the question above gets its energy from A. ADP B. ACT C. PTA D. ATP E. TPA
A characteristic of carrier molecules in a primary active transport pump is that: a. they cannot transport a substance and also hydrolyze ATP. b. they retain their same shape as they perform different roles. c. their primary role is to move negatively charged ions across membrances. d. they move Na+ into a neural cell and K+ out of the same cell. e. they act to establish an electrochemical gradient.
Water moves via osmosis _______. a. throughout the cytoplasm b. from an area with a high concentration of other solutes to a lower one c. from an area with a low concentration of solutes to an area with a higher one d. from an area with a low concentration of water to one of higher concentration
Among the membrane transporters, the channels require energy and therefore are involved in active transport. * D. Disagree, because channels are not proteins and therefore are not involved in active tranport. A. Agree, because channels are associated with H+-ATPase. B. Disagree, because the pumps are the ones involved in active transport. C. Agree, because channels are proteins involved in active transport.
8. Which of the following ion transport functions must be carried out by a pump? a. transport of Na+ from the extracellular space to the cytosol b. transport of glucose from the extracellular space to the cytosol c. transport of K+ from the cytosol to the extracellular space d. transport of Na+ from the cytosol to the nucleus e. transport of Na+ from the cytosol to the extracellular space.
Peripheral proteins are membrane proteins that... a. attach to integral proteins b. insert into the plasma membranec. include glycoproteins on intracellular surfaced. all of the abovee. none of the above
Which of the following statements about the sodium-potassium pump is correct? A) Both sodium and potassium move down their concentration gradient across the membrane B) 2 sodium ions are pumped out of the cell against their concentration gradient C) The sodium-potassium pump is a type of cotransport. D) ATP is used as an energy source
The cells lining the small intestine rapidly move large quantities of glucose from the glucose-rich food into their glucose-poor cytoplasm. Using this information which transport mechanism is most probably functioning in the intestinal cells? a) simple diffusion b) phagocytosis c) active transport pump d) exocytosis e) Facilitated diffusion
Ion transporters are “linked” together—not physi-cally, but as a consequence of their actions. For example,cells can raise their intracellular pH, when it becomes tooacidic, by exchanging external Na+ for internal H+, usinga Na+–H+ antiporter. The change in internal Na+ is thenredressed using the Na+-K+ pump.A. Can these two transporters, operating together,normalize both the H+ and the Na+ concentrations insidethe cell?B. Does the linked action of these two pumps causeimbalances in either the K+ concentration or the mem-brane potential? Why or why not?
A solute passively diffuses through a transport protein out of the cell, therefore, ____. a. the concentration of water is higher inside the cell than outside b. the concentration of water is lower inside the cell than outside c. the concentration of the solute is the same inside and outside the cell d. the concentration of the solute is lower inside the cell than outside e. the concentration of the solute is higher inside the cell than outside