. A solute cannot move into a cell by crossing the phospholipid bilayer of the membrane. It can, however, enter through a membrane pro- tein. The fact that solute molecules are entering the cell MOST LIKELY indicates that energy is being expended by the cell the solute is moving against its concentration gradient the solute molecules are hydrophilic the cell is in a hypotonic solution solute concentration is higher inside than outside the cell

. A solute cannot move into a cell by crossing the phospholipid bilayer of the membrane. It can, however, enter through a membrane pro- tein. The fact that solute molecules are entering the cell MOST LIKELY indicates that energy is being expended by the cell the solute is moving against its concentration gradient the solute molecules are hydrophilic the cell is in a hypotonic solution solute concentration is higher inside than outside the cell

Biology: The Unity and Diversity of Life (MindTap Course List)

15th Edition

ISBN:9781337408332

Author:Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr

Publisher:Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr

Chapter5: Ground Rules Of Metabolism

Section: Chapter Questions

Problem 11SQ: Solutes tend to diffuse from a region where they are _______ concentrated to an adjacent region...

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. DRAW IT An artificial “cell” consisting of an aqueous solutionenclosed in a selectively permeable membrane is immersed ina beaker containing a different solution, the “environment,”as shown in the accompanying diagram. The membrane ispermeable to water and to the simple sugars glucose and fructosebut impermeable to the disaccharide sucrose.(a) Draw solid arrows to indicate the net movement of solutesinto and/or out of the cell.(b) Is the solution outside the cell isotonic, hypotonic, orhypertonic?(c) Draw a dashed arrow to show the net osmosis, if any. (d) Will the artificial cell becomemore flaccid,more turgid,or stay the same?(e) Eventually, willthe two solutionshave the same ordifferent soluteconcentrations?
. channels in the plasma membraneopen or close in response to changes in theelectrical charge difference across themembrane
difference between channels and transporters is that O Only channels allow for the passage of solutes against their electrochemical gradient. OTransporters allow for a greater rate of transport across a membrane than channels do. O Only channels allow for the transport of ions. Transporters must undergo a conformational change upon binding to the solute.
TONICITY DRAGTHE WORDS INTO THE BLANK SPACES BELOW TO ACCURATELY COMPLETE THE PARAGRAPH decreases Hypertonic increases key: Hypotonic solute particle • cell membrane cell wall solute in all solutions, the solvent is H20 solvent A В Solution B is to solution A. This is because solution B has a greater concentration of in it than does solution A. Solution C has no solutes dissolved in it, therefore it is to both Solutions A and B. As the relative concentration of solutes in two solutions increases, of necessity the relative concentration of water in the same two solutions Solution A has a lower concentration of than does Solution C; Solution A is also hypertonic to Sol tion C.
In the image provided what membrane property is being demonstrated? membrane selective permeability of membrane for water molecules by diffusion O selective permeability of membrane for water molecules by osmosis fluid mosaic model of membrane fluidity O the effect of cholesterol in buffering membranes
The difference in the concentration of a - substance from one location to another is called diffusion concentration gradient O passive transport O osmosis O
Diffusion and osmosis classification Classify the following characteristics based on whether they are describing diffusion, osmosis, or both. Diffusion Results in an Can occur with equal distribution of solute molecules or without a membrane Always involves the movement of water Requires a semi-permeable membrane Osmosis Involves the movement of gases, ions, and small water soluble molecules Passive form of movement that requires no energy Moves from areas of high concentration to low Both Diffusion and Osmosis Responsible for gas exchange in the lungs concentration A 3 of 15 Next > Cation to open the document "Epicinstaller-13.0.0-fortnite-a8e4f12cada646caa706d8be407be69f (3).msi". tv 22
The electrochemical gradient across membranes is important in determining movement across membranes for a certain type(s) of solute. Which kind? Both anions and cations Positively charged (cations) Neutral/uncharged solutes Negatively charged (anions)
Which of the following best describes a hypotonic solution? O There is a higher concentration of solute outside the cell than inside the cell There is a lower concentration of solute outside the cell than inside the cell The solute concentration both inside and outside the cell is equal O Through osmosis, water will enter the cell causing it to swell Which of the following is true regarding bulk transport? ATP is required to pump molecules against the concentration gradient Bulk transport is an example of passive transport Transport of large quantities of materials ATP changes the shape of a protein channel during active transport
Solutes tend to diffuse from a region where they are _______ concentrated to an adjacent region where they are _______ concentrated. a. more, less b. less, more c. movement is independent of concentration
A characteristic of carrier molecules in a primary active transport pump is that: a. they cannot transport a substance and also hydrolyze ATP. b. they retain their same shape as they perform different roles. c. their primary role is to move negatively charged ions across membrances. d. they move Na+ into a neural cell and K+ out of the same cell. e. they act to establish an electrochemical gradient.
Enzyme linked receptors: Function directly as enzymes or they are linked to enzymes O Are surface receptors O Are trans-membrane proteins O All of the above Which of the followings is CORRECT about osmosis of water?