Which of the following best describes a hypotonic solution? 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 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

Which of the following best describes a hypotonic solution? 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 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

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 1TAHL: Which of the following methods of transport is being used to transfer the substance into the cell in...

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In the fluid mosaic model: plasma membrane proteins orient their hydrophilic sides toward the internal bilayer. phospholipids often flip-flop between the inner and outer layers. the mosaic refers to proteins attached to the underlying cytoskeleton. the fluid refers to the phospholipid bilayer. the mosaic refers to the symmetry of the internal membrane proteins and sterols.
In osmosis, water moves from an area of low solute concentration (high water concentration) to an area of high solute concentration (low water concentration). So, it's the movement of water that helps balance the concentration of solutes on both sides of a semipermeable membrane. My question is when water move from high concentration to low concentration ,it's the movement of water making it balance. So why does it says in definition low solutue concentration going to that high solutue concentration, isn't it make the solute like ion and other molecules going to the higher side and not making it balance. High concentration of water to low concentration water movement is make sense to me But low solute cocentration to high solute concentration part does not make sense at all Please explain how does low concerned ntration solute going to high concentration of solute making balance?
Match the transport mechanisms with their descriptions. (1) diffusion (2) facilitated diffusion (3) filtration (4) active transport (5) endocytosis (6) exocytosis A. the cell membrane engulfs a particle or substance, drawing it into the cell in a vesicleB. movement down the concentration gradient with a carrier protein, without energy inputC. movement down the concentration gradient without a carrier protein or energy inputD. a particle or substance leaves a cell in a vesicle that merges with the cell membraneE. movement against the concentration gradient with energy inputF. hydrostatic pressure forces substances through membranes
The following are the characteristics of the setup depicted below: The left side has a higher concentration of "yellow spheres" than the right side. The blue solution is water, and the yellow spheres dissolve in water (i.e. are osmoles). The dotted orange line is a semi-permeable membrane with characteristics exactly the same as a cell's plasma membrane. Below are TWO "If" statements that are separate questions. IF the yellow spheres are freely permeable across the dotted line, the process of [ Select ] ["facilitated diffusion", "active transport", "simple diffusion", "osmosis"] will occur. Consequently, the volume of water on the left side will [ Select ] ["stay the same", "decrease", "increase"] IF the yellow spheres cannot cross the membrane at all, the process of [ Select ] ["osmosis", "facilitated…
secondary 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 cell
A blood cell with a 2% internal solute concentration is placed in a solution that has a 0.2% solute concentration. The solute is impermeable to the plasma membrane. How would you classify the solution compared to the cell – hypotonic, hypertonic or isotonic? Why? (2 pts.) B) Will the solutes move across the membrane? Why or why not? C) What type of transport would occur in this situation – diffusion, facilitated diffusion, osmosis, active transport or bulk transport. Explain. D) What would happen if the cell began to produce a new membrane protein that allowed the solutes to freely move in across the membrane? ould this change your answer to Part C? Explain.
secondary 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 cell
Here is a chloride cell in the gill epithelium of a fish. For reference, NKA = Na+/K+ ATPaseNKCC = Na+/K+/Cl- cotransporter. The NKCC (Na+ K+ Cl- cotransporter) moves Cl- into the cell against its concentration gradient. What type of transport does NKCC carry out?A. passive diffusionB. facilitated diffusionC. secondary active transportD. primary active transport
Which of the following is true of exocytosis, but not true of facilitated diffusion? Select all that apply. A) Involves transport vesicles B) May be used to move a hydrophilic substance to the other side of the membrane C) Requires energy D) Always moves a substance down its concentration gradient E) Always results in a substance exiting from the cell .
An artificial cell consisting of an aqueous solution enclosed by a selectively permeable membrane is immersed in a beaker containing a different solution. The membrane is permeable to water and to the simple sugars glucose and fructose but impermeable to the disaccharide sucrose. Draw solid arrows to indicate the net movement of solutes (glucose and fructose) into or out of the cell. b. Is the solution outside the cell isotonic, hypotonic, or hypertonic to the cell? c. Draw a dashed arrow to show the net movement of water, if any d. Will the artificial cell shrivel, swell, or stay the same?
The primary function of the kidney is to exchange molecules across a membrane between the blood and the urine. One type of kidney cell has a basic rectangular shape, except for a single surface, which is lined with tiny, finger-like projections that extend into the surrounding extracellular space. Which of the following best explains the advantage these projections provide the cell? The projections increase the selectivity of the membrane because the small size of the projections limits the number of transport proteins that can be embedded in the membrane. The projections increase the volume of the cell without affecting the surface area, which increases the metabolic needs of the cell. The projections increase the surface area–to-volume ratio of the cell, which allows for more efficient nutrient exchange with the environment. The projections increase the speed at which an individual molecule can move,…
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.