if a cell has a net positive charge inside and there is a net negative charge outside the cell, which of the following is correct (if the membrane is permeable to each substance and the concentration of each is the same inside and outside the cell)? a. negative ions will move into the cell b. positive ions will move into the cell c. neutral ions will move into the cell d. negative ions will move our of the cell

if a cell has a net positive charge inside and there is a net negative charge outside the cell, which of the following is correct (if the membrane is permeable to each substance and the concentration of each is the same inside and outside the cell)? a. negative ions will move into the cell b. positive ions will move into the cell c. neutral ions will move into the cell d. negative ions will move our of the cell

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 2TAHL: Assume that a membrane permeable to Na+ but not to Cl- separates two solutions. The concentration of...

See similar textbooks

Similar questions

Which of the following does not contribute to the selective permeability of a biological membrane?a. specificity of the carrier proteins in the membraneb. selectivity of channel proteins in the membranec. hydrophobic barrier of the phospholipid bilayerd. hydrogen bond formation between water and phosphate group
Which of the following regarding the sodium potassium pump is FALSE? It tends to be found on the apical plasma membrane of polarized cells It transports three sodium ions to the outside of the cell It transports two potassium ions to the inside of the cell. It helps to maintain unequal distribution of ions across the plasma membrane
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
Chloride ions (Cl-) are in higher concentration outside of the cell compared to the intracellular fluid (ICF). If a cell is at rest and chloride-specific ion channels open, identify what would happen. Choose ALL of the correct answers. 1 Some chloride will enter the cell, but the concentration gradient for chloride will not change much. 2 The membrane will hyperpolarize 3 Chloride will come into the cell until it reaches chemical equilibrium. 4 The membrane potential won't change. 5 The membrane will depolarize 6 Some chloride will leave the cell, but the concentration gradient for chloride will not change much
Would it be possible for small ions to passively diffuse (simple diffusion) across a selectively permeable membrane? Why? A Yes, because ions are highly non-polar in nature B Yes, because ions are highly polar in nature No, because it needs the aid of transport proteins to cross the membrane No, because not only transport proteins but also metabolic energy from ATP are needed to transport ions across the plasma membrane
An animal cell has an internal concentration of 0.1M of NaCl. You place this cell into a solution with 5M NaCl. Select the true statement below. The solution is hypotonic to the cell therefore the cell will lyse The solution is hypotonic to the cell therefore the cell will shrivel The solution is hypertonic to the cell therefore water will lyse The solution is hypertonic to the cell therefore water will shrivel
In the figure below are several panels that illustrate the relative concentration of a particular solute on either side of a cell's plasma membrane. The top panel represents the INITIAL (or starting) scenario, and the lower panels represent different possible outcomes after time has passed. QUESTION: Which of the panels below represents a situation in which the concentration gradient of this solute has been minimized (reduced)? A B C D
Which of the following statements best describes the movement of molecules in a cell if its concentration on both sides is the same? Group of answer choices The molecules will stop moving across the membrane. The molecules will continue to move across the membrane in both directions. The molecules will move across the membrane to the outside of the cell. The molecules will move across the membrane to the inside of the cell.
If the intracellular concentration of sodium ions in a cell is 5 mM and the extracellular concentration is 140 mM, which of the following would be TRUE? a at room temperature the equilibrium potential of sodium would be -84 mV b if the cell was only permeable to sodium its membrane potential would be negative c sodium ions would tend to move by simple diffusion into the cell d all of the above e none of the above
Dane is doing an experiment by using a dialyzing membrane as a model for cell membrane to observe the movement of the substances like glucose in before and after fluids using benedict's test. BEFORE: Fluid in the beaker blue (absence of glucose) Fluid in the bag orange (presence of glucose) AFTER Fluid in the beaker orange (presence of glucose) Fluid in the bag orange (presence of glucose) Was there a movement of glucose across the artificial membrane? Why or why not?
The physical characteristics of a cell influence how it functions. For example, the surface area and volume of a cell affect how efficiently waste is removed from the cell via diffusion. The table below shows data for four different cuboidal cells. Cuboidal cell Side length (um) Cell A 1 Cell B Cell C Cell D Surface area of a cube: A = 6s2 Volume of a cube: V = s3 Using the information from the table, what is the surface-area-to-volume ratio for the cuboidal cell that removes waste via diffusion most efficiently? -1 um 2. 4.
CELL ENVIRONMENTS Fill in the following statement: Diffusion is the movement of molecules from_high_concentration to_low. concentration. is the diffusion of water. BEAKER #I The solution inside the beaker is: % water % salt The solution inside the cell is: 90 10 % water % salt 20% salt How will the water move? Into the cell or out of the cell? 10% salt How will the movement of water affect the cell? The cell O Water molecules This is a(n) solution.