Statement 1: Because most solutes cannot cross plasma membranes, water tends to move acrossmembranes in response to differences in solute concentrations inside and outside the cell.Statement 2: Hypotonic solutions cause water molecules to diffuse out of the cell, dehydrating it.Both statements are true.Both statements are false.Statement 1 is true. Statement 2 is false.D Statement 1 is false. Statement 2 is true.

Hypotonic solution - It is the solution which has less number of solutes dissolved in it. Hypertonic…

Answered: Statement 1: Because most solutes…

Body Structures & Functions

12th Edition

ISBN:9781285695495

Author:Scott

Publisher:Scott

Chapter3: Cells

Section: Chapter Questions

Problem 3ATP

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The passive movement of a solute through a membrane protein down its concentration gradient is an example of _________. a. osmosis b. active transport c. endocytosis d. diffusion
Statement 1: The direction of diffusion of a solute across a membrane is determined by its concentration gradient and always moves toward equilibrium. Statement 2: In passive transport, solutes move down the gradient from a region of low concentration to a region of high concentration. A Both statements are true. Both statements are false. C) Statement 1 is true. Statement 2 is false. Statement 1 is false. Statement 2 is true.
Statement 1: Downhill transport of large, polar molecules and ions, called facilitated diffusion, must be mediated by carrier proteins and channel proteins because these molecules and ions cannot diffuse through the biological membrane directly. Statement 2: For the transport of ions, the electrochemical potential is considered. Statement 1 is true. Statement 2 is false. Statement 1 is false. Statement 2 is true. Both statements are true. Both statements are false
Statement 1: Downhill transport of large, polar molecules and ions, called facilitated diffusion, must be mediated by carrier proteins and channel proteins because these molecules and ions cannot diffuse through the biological membrane directly. Statement 2: For the transport of ions, the electrochemical potential is considered. A) Statement 1 is true. Statement 2 is false. B Statement 1 is false. Statement 2 is true. Both statements are true. Both statements are false.
The distribution of water is determined by solute concentrations. A hypertonic solution would cause a body cell to shrink in size
Statement 1: Peripheral Membrane Proteins are hydrophilic and are typically attached to the polar head groups of the phospholipid bilayer by ionic and hydrogen bonding. Statement 2: It is easier to remove peripheral membrane proteins in the plasma membrane than integral membrane proteins. A Statement 1 is true. Statement 2 is false. B Statement 1 is false. Statement 2 is true. (C) Both statements are true. Both statements are false.
Statement 1: Peripheral Membrane Proteins are hydrophilic and are typically attached to the polar head groups of the phospholipid bilayer. Statement 2: It is easier to remove peripheral membrane proteins in the plasma membrane than integral membrane proteins. Statement 1 is true. Statement 2 is false. Statement 1 is false. Statement 2 is true. Both statements are true. Both statements are false
Which of the following best describes a hypotonic solution? a-There is a higher concentration of solute outside the cell than inside the cell b-There is a lower concentration of solute outside the cell than inside the cell c-The solute concentration both inside and outside the cell is equal d-Through osmosis, water will enter the cell causing it to swell
Because of the phospholipid cell membrane, water cannot diffuse into or out of the cell. True or false
A substance moving across a membrane against a concentration gradient is moving by: active transport facilitated diffusion passive transport osmosis
The movement of a substance across a membrane, from low to high concentrations of that substance (requiring the expenditure of energy, often in the form of ATP hydrolysis), is always categorized as: active transport facilitated diffusion simple diffusion passive transport osmosis
When two chambers are separated by a membrane permeable to water but not solute, if water is free to move in either direction without limitation or pressure, then water will move until the concentration of solute on both sides of the chamber is equal move until there is no water on the dilute side move until there is no water on the concentrated side move until the concentration of water on both sides of the chamber is equal

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