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 12TYK
Water passes quickly through cell membranes because
- a. water movement is linked to A TP hydrolysis.
- b. it is a small, polar, charged molecule.
- c. aquaporins facilitate the movement of water across the membrane.
- d. it moves through hydrophobic channels.
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Students have asked these similar questions
part 1 Reaching osmotic balance across a semipermeable membrane for non-charged molecules depends on:
a.Relative solute concentration gradient across the membrane
b.Relative electrical gradient across the membrane
c.Relative solute concentration and electrical gradient across the membrane
part 2 The equilibrium of a charged molecule across a semipermeable membrane depends on:
a.Relative solute concentration gradient across the membrane
b.Relative electrical gradient across the membrane
c.Relative solute concentration and electrical gradient across the membrane
How 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.
Which of the following statements is TRUE?
A. Water and electrolytes move across the cell membranes only through protein channels
B. Water and electrolytes cannot move across cell membranes
C. Water freely moves across cell membranes
D. Electrolytes freely move across cell membranes
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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- 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 concentrationarrow_forwardWhen a semipermeable sac filled with a solution containing 10% glucose is immersed in water, the fluid volume in the sac increases. What would happen if the sac solution was replaced with a 20% glucose solution? Group of answer choices A) sac would gain more fluid B) sac would gain the same amount of fluid C) no effect D) sac would lose fluidarrow_forwardImmerse a human red blood cell in a hypotonic solution, and water____ . a. diffuses into the cell c. shows no net movement b. diffuses out of the cell d. moves in by endocytosisarrow_forward
- Hydrogen bonding between water molecules results in a. submersion. b. adhesion. c. evaporation. d. cohesion.arrow_forward_______ is the net movement of substances from a high concentration to a low concentration medium, whereas the _______ is the net movement of water across a membrane. a. Diffusion- ultrafiltration b. Dialysis-osmosis c. Diffusion-osmosis d. Osmosis-diffusionarrow_forwardOne substance flows down its concentration gradient, and the energy is harnessed to move another substance up its gradient in the same direction. This best describes a. primary active transport. b. endocytosis. c. symport secondary active transport. d. antiport secondary active transport.arrow_forward
- During osmosis, water moves across a selectively permeable membrane toward a solution with: A. The lowest solute concentration B. Less water molecules C. More water molecules D. All of the abovearrow_forwardWhich of the following statements is true about active transport? A. The transported species always moves against its electrochemical gradient. B. It is needed only for the transport of polar molecules. C. It is exergonic. D. It must be linked to ATP hydrolysis.arrow_forwardActive transport of a substance across a membrane requiresa. a gradient b. the expenditure of ATP c. water d. diffusionarrow_forward
- A potato cube is placed in a solution. The volume of the potato increases. which statement below is the correct interpretation of this result? a) The potato is in an isotonic solution b) The potato is is in a hypotonic solution c) water is moving equally in and out of the potato d) The potato is in a hypertonic solutionarrow_forwardWhich of the following best describes a hyperosmotic solution? A. a solution with a higher concentration of solutes as compared to the other side of the membrane B. a solution with a lower concentration of solute as compared to the other side of the membrane C. a solution with equal solute concentration as compared to the other side of the membrane D. none of the abovearrow_forwardWhat is meant by 'free water molecules" in relationship to the movement of water between a hypertonic and hypotonic solution? You can diagram and explain or just explainarrow_forward
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