Biology: The Dynamic Science (MindTap Course List)
4th Edition
ISBN: 9781305389892
Author: Peter J. Russell, Paul E. Hertz, Beverly McMillan
Publisher: Cengage Learning
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Textbook Question
Chapter 5, Problem 5TYK
A driving ion moving through a membrane channel in one direction gives energy to actively transport another molecule in the opposite direction. What is this process called?
a. facilitated diffusion
b. antiport transport
c. symport transport
d. primary active transport pump
e. contransport
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Students have asked these similar questions
Which statement is NOT true of membrane transport
• proteins?
A. Their specificity depends on their three-dimensional structure.
B. They are responsible in some cases for facilitated diffusion.
C. They are responsible in some cases for active transport.
D. They produce a chemical change in the molecules they are transporting.
Na+ moves from high to low concentration, across the plasma membrane, through a protein channel that is permenantly open. Which statement is true about this process?
a. It does not require ATP
b. It is a form of active transport
c. Movement is against the concentration gradient of Na+
d. The channel probably allows many different molecules and ions to cross
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.
Chapter 5 Solutions
Biology: The Dynamic Science (MindTap Course List)
Ch. 5.1 - Describe the fluid mosaic model for membrane...Ch. 5.1 - Give two examples each of integral proteins and...Ch. 5.2 - What is the difference between passive and active...Ch. 5.2 - Prob. 2SBCh. 5.3 - Prob. 1SBCh. 5.3 - Prob. 2SBCh. 5.4 - Prob. 1SBCh. 5.4 - Prob. 2SBCh. 5.5 - Prob. 1SBCh. 5.5 - Prob. 2SB
Ch. 5 - In the fluid mosaic model: plasma membrane...Ch. 5 - Which of the following statements is false?...Ch. 5 - The freeze-fracture technique demonstrated: a....Ch. 5 - A characteristic of carrier molecules in a primary...Ch. 5 - A driving ion moving through a membrane channel in...Ch. 5 - Phagocytosis illustrates which phenomenon? a....Ch. 5 - Place in order the following events of...Ch. 5 - Prob. 8TYKCh. 5 - Which of the following statements is true for the...Ch. 5 - Using the principle of diffusion, a dialysis...Ch. 5 - Discuss Concepts The bacterium Vibrio cholera...Ch. 5 - Prob. 12TYKCh. 5 - Prob. 13TYKCh. 5 - Prob. 15TYKCh. 5 - Some cancer cells are insensitive to typical...Ch. 5 - Some cancer cells are insensitive to typical...
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- Which of the following methods of transport is being used to transfer the substance into the cell in the accompanying graph? a. diffusion down a concentration gradient b. osmosis c. facilitated diffusion d. active transport e. vesicular transport f. It is impossible to tell with the information provided.arrow_forwardWater 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 concentrationarrow_forwardWhen cellular transport through the plasma membrane must be provided with energy in form of ATP to power the transport process, what is this called? A. Selective permeability B. Passive transport C. Active transport D. Diffusionarrow_forward
- The image illustrates passive and active transport across the cell membrane. (Use the diagram to answer questions A-C) A. 1. Which section shows active transport?2. Explain why or how can you tell?3. Does the cell expend energy in this transport?4. Why or why not? B. 1. Which section shows diffusion?2. What type of solute molecules may be moved by this type of transport? C. Which of these sections are considered passive transport? Explain.arrow_forwardFacilitated transport differs from diffusion in that facilitated diffusiona. involves the passive use of a carrier protein.b. involves the active use of a carrier protein.c. moves a molecule from a low to a high concentration.d. involves the use of ATP molecules.arrow_forwardHow can substances be transported across a membrane against their concentration gradient? A. If the plasma membrane is fully hydrophobic. B. The plasma membrane is permeable to all small molecules. C. Some membrane proteins act as channels for specific molecules to enter the cell. D. Some membrane proteins are ATP-dependent carrier molecules.arrow_forward
- The diffusion of water across a selectively permeable membrane is called? A. Active transport B. Facilitated diffusion C. Osmosis D. Cell membranearrow_forwardFacilitated diffusion differs from active transport in thatfacilitated diffusiona. expends no ATP.b. moves molecules from an area of higher concentration toone of lower concentration.c. does not require a carrier protein for transport.d. moves molecules in vesicles across a semipermeablemembrane.arrow_forwardWhich observation would suggest that active transport, rather than passive diffusion, is responsible for moving a particular substance from the outside of a cell into a cell? a. a higher concentration of the substance outside the cell than inside the cell. b. a higher concentration of the substance inside the cell than outside the cell. c. a positive correlation between ATP breakdown and the amount of substance taken in. d. b and c are both correct.arrow_forward
- 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 reachedarrow_forwardThe image illustrates passive and active transport across the cell membrane. (Use the diagram to answer questions A-D) A. 1. Which section represents facilitated diffusion?2. Explain why or how can you tell?3. Does the cell expend energy in this transport?4. Why or why not?5. What type of solute molecules may be moved by this type of transport? B. 1. Which section shows active transport?2. Explain why or how can you tell?3. Does the cell expend energy in this transport?4. Why or why not? C. 1. Which section shows diffusion?2. What type of solute molecules may be moved by this type of transport? D. Which of these sections are considered passive transport? Explain.arrow_forwardGlucose is transported across the cell membrane of intestinal cells. The cells lining the small intestine, however, 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 facilitated diffusion B simple diffusion C osmosis D concentration gradientarrow_forward
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