Campbell Biology: Concepts & Connections (8th Edition)
8th Edition
ISBN: 9780321885326
Author: Jane B. Reece, Martha R. Taylor, Eric J. Simon, Jean L. Dickey, Kelly A. Hogan
Publisher: PEARSON
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Textbook Question
Chapter 5, Problem 7TYK
Facilitated diffusion across a membrane requires _____ and moves a solute _____ its concentration gradient.
a. transport proteins … up (against)
b. transport proteins … down
c. energy and transport proteins … up
d. energy and transport proteins … down
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Students have asked these similar questions
How does each of the following molecule pass through the plasma membrane in the described scenarios?
A. Both simple diffusion and facilitated diffusion
B. facilitated diffusion
C. simple diffusion
D. active transport
1.
Molecular oxygen (O2) and carbon dioxide (CO2) traveling downtheir concentration gradient.
2.
inorganic ions traveling down their concentration gradient
3.
glucose traveling against its concentration gradient
4.
water molecules (H2O) traveling down their concentration gradient
one 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 saturated
Cells transport sodium ions out of the cell against the sodium concentration gradient. This is an example of: a. facilitated diffusion b. simple diffusion c. diffusion via channel proteins d. endocytosis e. active transport
Chapter 5 Solutions
Campbell Biology: Concepts & Connections (8th Edition)
Ch. 5 - Fill in the following concept map to review the...Ch. 5 - Label the parts of the following diagram...Ch. 5 - Which best describes the structure of a cell...Ch. 5 - Prob. 4TYKCh. 5 - The sodium concentration in a cell is 10 times...Ch. 5 - The synthesis of ATP from ADP and a. stores energy...Ch. 5 - Facilitated diffusion across a membrane requires...Ch. 5 - What are the main types of cellular work? How does...Ch. 5 - Why is the barrier of the activation energy...Ch. 5 - Relate the laws of thermodynamics to living...
Ch. 5 - How do the components and structure of cell...Ch. 5 - Sometimes inhibitors can be harmful to a cell;...Ch. 5 - Cells lining kidney tubules function in the...Ch. 5 - SCIENTIFIC THINKING Mercury is known to inhibit...Ch. 5 - A biologist performed two series of experiments on...Ch. 5 - Organophosphates (organic compounds containing...
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- Which of these statements about facilitated diffusion is true?a. In facilitated diffusion, net movement is down the concentrationgradient.b. Facilitated diffusion requires the expenditure of energy.c. Facilitated diffusion does not require a carrier protein.d. Facilitated diffusion moves materials through ion pumps.e. Facilitated diffusion moves materials in vesicles.arrow_forwardThe 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_forwardsecondary active transport depends on which of the following principals a. sodium is pumped pout of the cells against a concentration gradient by [primary active transport b. sodium moves out the cells with a concentration gradient c. primary active transport is necessary to pump sodium into the cell from higher to lower concentration d. diffusion causes sodium to move our of the cellarrow_forward
- Would it be possible for small ions to passively diffuse (simple diffusion) across a selectively permeable membrane? Why? A Yes, because ions are highly non-polar in nature B Yes, because ions are highly polar in nature No, because it needs the aid of transport proteins to cross the membrane No, because not only transport proteins but also metabolic energy from ATP are needed to transport ions across the plasma membranearrow_forwardWhich of the following is incorrect regarding facilitated diffusion?a. It is a passive process.b. It allows the movement of molecules from areas of lowconcentration to areas of high concentration.c. It may use either channel or carrier proteins.d. It allows the rapid transport of glucose across the membrane.arrow_forwardWhich is common between active transport and facilitated diffusion A Both uses metabolic energy B Both processes happen with the aid of transport proteins C Both of them transport molecules from lower to higher concentration D Both of them transport molecules from higher to lower concentrationarrow_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_forwardsecondary 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 cellarrow_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_forward
- Glucose 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_forwardwhich of the following statements is correct about the movement of water across a plasma membrane a. it cannot pass through any ion channels b. it moves through the membrane via mediated transport c. even though it a polar molecule, it moves readily through the nonpolar lipid bilayer d. artificial lipid membranes are impermeable to waterarrow_forwardPassive 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_forward
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