Determine the type of transport. Here are your options: Simple diffusion, facilitated diffusion, osmosis, primary active transport, secondary active transport 1. A hydrophobic molecule is moving through the membrane 2. K+ moving against its gradient (low to high) through the sodiumpotassium pump 3. Water moving through the cell membrane 4. A solute moving down its gradient through a carrier protein

Determine the type of transport. Here are your options: Simple diffusion, facilitated diffusion, osmosis, primary active transport, secondary active transport 1. A hydrophobic molecule is moving through the membrane 2. K+ moving against its gradient (low to high) through the sodiumpotassium pump 3. Water moving through the cell membrane 4. A solute moving down its gradient through a carrier protein

Human Physiology: From Cells to Systems (MindTap Course List)

9th Edition

ISBN:9781285866932

Author:Lauralee Sherwood

Publisher:Lauralee Sherwood

Chapter3: The Plasma Membrane And Membrane Potential

Section: Chapter Questions

Problem 6RE

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extracellular concentration time extracellular concentration While studying the rate of transport of a molecule into muscle cells, the above graphs were obtained. These graphs are consistent with which of the following transport mechanisms? Select all that apply. Active transport Facilitated Diffusion Transport via specific membrane proteins Simple Diffusion intracellular concentration transport rate
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
Which of the following statements are correct? Explain your answers. The plasma membrane is highly impermeable to all charged molecules. Channels have specific binding pockets for the solute molecules they allow to pass. Transporters allow solutes to cross a membrane at much faster rates than do channels. Certain H+ pumps are fueled by light energy. The plasma membrane of many animal cells contains open K+ channels, yet the K+ concentration in the cytosol is much higher than outside the cell. A symport would function as an antiport if its orientation in the membrane were reversed (i.e., if the portion of the molecule normally exposed to the cytosol faced the outside of the cell instead). The membrane potential of an axon temporarily becomes more negative when an action potential excites it.
Time Which of the following is not true about Active transport Select one: O is not driven by the concentration gradient in the cell. O can increase the concentration of an ion in the cell more than the surrounding medium. O is driven by ATP and PME O requires the help of channel proteins. occurs with the assistance of membrane proteins. N
One of the curves below describes nonmediated diffusion, and the other describes facilitated transport. Which is which? Explain your choices. Concentration difference across membrane Rate of transport -
三v ng 10. For each statement below, check the type of transport that it correctly describes. There may be more than one correct answer for each. 田 Facilitated Active Simple diffusion Osmosis Diffusion Transport Molecule moves down its concentration gradient Molecule moves through a transmembrane protein Molecules move through the phospholipids directly Molecule moves against its concentration gradient Diffusion of the solvent specifically This process requires energy This process does not require energy II
Which of the following characteristics may be used to describe Active Transport? Select all that apply. occurs without a transporter protein requires an energy source shows saturation kinetics (has a maximum rate) can occur against a concentration gradient (i.e. uphill)
itences or clauses with complete thought. ng table. Make sure that your Table 23: Effect of Osmosis on Red Blood Cells Concentration of Concentration of Internal Environment Solute Outside the Cell Water Inside the Inside the Outside Effect on the Cell Cell Cell the Cell Hypertonic Hypotonic I sotonic Facilitated Diffusion OUa to be aided by transport proteins whenever they cross the cell membran of protein-assisted passive transport is calle nhonnels th Since ions and polar molecules cannot diffuse freely through the phospholipid bilayer, hy dre
Drag the appropriate labels to their respective targets. Reset Help Receptor-mediated endocytosis Secondary active transport Facilitated diffusion Exocytosis Passive transport Primary active transport Phagocytosis Osmosis Simple diffusion Pinocytosis ATPase pump Solute (jon) Solutes Solute Solute Solute H,0 Carrier protein -Plasma membrane Solute Carrier/ channel protein ATPase pump Cytosol ADP ADP Partide Ligand Pseudo- Receptor. Receptor podium Protein-coated pit Protein-coated pit Forming veside Cytosol Veside Veside Vesidle
rate of transport Vmax 1/2Vmax transporter-mecated diffusion Km simple diffusion concentration of transported molecule The graph at left shows rates of movement across a cell membrane for a substance that uses simple diffusion (green) and a transport mechanism (red). Which of the following is TRUE about the transporters at the point shown by the arrow? A. The transporter proteins are operating more slowly than at lower concentrations. B. The transporter proteins are operating as fast as possible. C. The transporters proteins shut off at that concentration. D. The rate slows because transporter proteins run out of ATP.
In Chapters 11 & 12, the following examples of membrane transport proteins are given. Fill out the table with the correct answer for that particular transport protein. Type of transport protein (channel or carrier/transporter?) K* leak channel glucose transporter bacteriorhodopsin Na-K pump glucose-Na symport Na-H exchanger Performs active or passive transport? Energy source for movement of solute(s) or ion(s) Direction of movement of solute(s) or ion(s) with respect to the electrochemical gradient Na K* Na glucose Na H' Direction of movement of solute(s) or ion(s) with respect to the membrane crossed Na K₁ Na' glucose Na H' Is the protein a uniport, symport, antiport, or none of the above?
CLEAR MY CHOICE The logic/reason behind movement of only the red molecules and not the blue across the membrane is? a. The membrane is selectively permeable, and allows only red molecules to pass O b. The membrane is selectively permeable, and the molecules are both soluble C. The membrane is impermeable, and the molecules are different in size O d. The membrane is impermeable, and allows only small molecules to pass O e. None of the answers are correct pe here to search