Study Guide for Campbell Biology
11th Edition
ISBN: 9780134443775
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Jane B. Reece, Martha R. Taylor, Michael A. Pollock
Publisher: PEARSON
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Textbook Question
Chapter 7, Problem 13TYK
Facilitated diffusion of ions across a cellular membrane requires _____, and the ions move _____.
- a. energy and channel proteins; against their
electrochemical gradient - b. cotransport proteins; against their electrochemical gradient
- c. cotransport proteins; down their electrochemical gradient
- d. channel proteins; down their electrochemical gradient
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Students have asked these similar questions
During passive transport, substances will move across a selectively permeable membrane until… explain why
A. There is no longer any energy to be used
B. All solutes reach the other side of the membrane
C. There is no more room inside of the cell
D. Equilibrium is reached
Below are three statements - two of which are truths and one is a lie. Which of the following statements is a lie?
Select one:
a.The primary active transport uses external chemical energy.
b.The sodium-potassium pump which is an example of primary active transport is considered as the most important pump.
c. In primary active transport, the energy is derived secondarily from energy that has been stored in the form of ionic concentration differences between the two sides of a membrane.
secondary active transport depends on which of the following principles?
a. sodium is pumped out of the cell against a concentration gradient by primary active transport
b. sodium moves out of the cell with a concentration gradient
c. primary active transport is necessary to pump sodium into the cell from a higher to lower concentration
d. diffusion causes sodium to move out of the cell
Chapter 7 Solutions
Study Guide for Campbell Biology
Ch. 7 - Label the components in the following diagram of a...Ch. 7 - a. Cite some experimental evidence that indicates...Ch. 7 - List the six major functions that membrane...Ch. 7 - What types of molecules have difficulty crossing...Ch. 7 - A solution of 1 M glucose is separated by a...Ch. 7 - a. What osmotic problems does the freshwater...Ch. 7 - Prob. 7IQCh. 7 - Prob. 8IQCh. 7 - a. How is cholesterol transported into human...Ch. 7 - Create a concept map to illustrate your...
Ch. 7 - The following diagram illustrates passive and...Ch. 7 - If a single layer of phospholipids coats the water...Ch. 7 - Glycoproteins and glycolipids are important for a....Ch. 7 - Prob. 3TYKCh. 7 - Prob. 4TYKCh. 7 - Prob. 5TYKCh. 7 - Use the following U-tube setup to answer questions...Ch. 7 - Use the following U-tube setup to answer questions...Ch. 7 - Use the following U-tube setup to answer questions...Ch. 7 - How much work is expended in diffusion? a. an...Ch. 7 - Prob. 10TYKCh. 7 - Prob. 11TYKCh. 7 - Water passes quickly through cell membranes...Ch. 7 - Facilitated diffusion of ions across a cellular...Ch. 7 - Prob. 14TYKCh. 7 - Which of the following describes cotransport? a....Ch. 7 - Prob. 16TYKCh. 7 - An animal cell moves potassium against its...Ch. 7 - Prob. 18TYKCh. 7 - Prob. 19TYKCh. 7 - In response to low blood pressure, the adrenal...
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- Passive membrane transport processes include... a.movement of water from an area of high solute concentration to an area of low concentration b.consumption of ATP c.the use of transport proteins when moving substances from areas of low to high concentration d.movement of a substance down its concentration gradientarrow_forwardActive transport must function continuously because a.facilitated transport opposes active transport b.not all membranes are amphiphilic c.diffusion is constantly moving solutes in opposite directions d.the cell needs ions outside the cell e.plasma membrane wear outarrow_forwardBelow are three statements - two of which are truths and one is a lie. Which of the following statements is a lie? Select one: a. Both primary and secondary transport moves solutes against their concentration gradients. b. The primary active transport prepares the conditions of the membrane gradient by making the extracellular membrane slightly more negative than the intracellular membrane. c. The primary active transport uses ATP while secondary active transport helps replenish ATP.arrow_forward
- The process of “active transport" through a membrane may be described by which of the following? A. the movement of ions and small molecules away from regions where they are in high concentration. B. the use of energy from ATP to move ions and small molecules into regions where they are in lower concentration. C. the plasma membrane engulfs the substance and moves it through the membrane. D. the use of energy from ATP to move ions and small molecules against their concentration gradient.arrow_forwardWhich of the following statements about active processes of membrane transport is true? a. cellular energy is required b. substances move against its concentration gradient c. all requires the aid of proteins during transport d. a and b e. a, b, and carrow_forwardone 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 saturatedarrow_forward
- Which of the following statement(s) about passive processes of membrane transport is false? a. cellular energy is not requiredb. substances move along its concentration gradientc. all require the aid of proteins during transportd. all of the abovee. none of the abovearrow_forwardWhich of the following statement(s) about active processes of membrane transport is false? a. cellular energy is requiredb. substances move against its concentration gradientc. all requires the aid of proteins during transportd. occurs in all cell membranese. none of the abovearrow_forwardIn which way are voltage-gated ion channels and active transporters similar? a they are required to move small permeable molecules across cell membranes b they are proteins which move molecules across cell membranes c they utilize facilitated diffusion d they directly require energy in the form of ATP to move molecules e they generate concentration gradientsarrow_forward
- Given these three statements - two of which are truths and one is a lie. Which of the following statements is a lie? Select one: a.The primary active transport prepares the conditions of the membrane gradient by making the extracellular membrane have a less negative charge in the concentration gradient than the intracellular membrane. b. The primary active transport uses ATP while secondary transport helps replenish ATP. c. Both primary and secondary transport moves solutes against their concentration gradients.arrow_forwardActive transport must function continuously because. a. plasma membranes wear out b. not all membranes are amphiphilic c. facilitated transport opposes active transport d. diffusion is constantly moving solutes in opposite directionsarrow_forwardSecondary active transport … A. Moves a molecule against its chemical gradient but with its concentration gradient. B. Moves a molecule against its concentration gradient but with its chemical gradient. C. Uses ATP to directly move molecules against their electrochemical gradient. D. Uses an electrochemical gradient of one molecule to power movement of a different molecule against its electrochemical gradient.arrow_forward
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