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?

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?

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 7RE

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Similar questions

The plasma membrane __________. a. surrounds the cytoplasm b. separates the nucleus from the cytoplasm c. separates the cell interior from the environment d. both a and c
The tails of the phospholipids of the plasma membrane are composed of _____ and are _____? a. phosphate groups; hydrophobic b. fatty acid groups; hydrophilic c. phosphate groups; hydrophilic d. fatty acid groups; hydrophobic
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
When the membrane is at rest, what are the forces acting on sodium ions?A. Both the concentration gradient and the electrical gradient tend to move sodium ions into the cell.B. Both the concentration gradient and the electrical gradient tend to move sodium ions out of the cell.C. The concentration gradient tends to move sodium ions into the cell, and the electrical gradient tends to move them out of the cell.D. The concentration gradient tends to move sodium ions out of the cell, and the electrical gradient tends to move them into the cell.
When the membrane is at rest, what are the forces acting on potassium ions?A. Both the concentration gradient and the electrical gradient tend to move potassium ions into the cell.B. Both the concentration gradient and the electrical gradient tend to move potassium ions out of the cell.C. The concentration gradient tends to move potassium ions into the cell, and the electrical gradient tends to move them out of the cell.D. The concentration gradient tends to move potassium ions out of the cell, and the electrical gradient tends to move them into the cell.
Which of the following is not a function of the extracellular matrix Select one: A. Prevents the loss of water when cells are placed in a hypertonic solution. B. Assists in the movement of substances across the plasma membrane. C. Has numerous functions that affect the shape and activities of the cell that produced it. D. Takes place in reception of molecules
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
Why are ion channels necessary to transport ions into or out of a cell? a. Ions are too large to diffuse through the membrane. b. Ions are charged particles and cannot diffuse through the hydrophobic interior of the membrane. c. Ions do not need ion channels to move through the membrane. d. Ions bind to carrier proteins in the bloodstream, which must be removed before transport into the cell.
Which of the following is Not a function of the plasma membrane proteins? A. Acting as enzymes B. Acting as channels C. Acting as carriers D. Stabilizing temperature
If the fluid within a cell contains a lower concentration of dissolved solutes compared to the external fluid surrounding the cell, we say that the cellular fluid is ________ relative to the external fluid, and water will ________ the cell. hypertonic / flow into hypertonic / flow out of hypotonic / flow into hypotonic / flow out of isotonic / have the same flow rate into and out of
Which of the following will likely result if the concentration of electrolytes outside the cell is higher than in the intracellular environment? A. The cell will be unaffected B. The cell will burst C. The cell will shrink and dry up D. The cell will undergo mitosis and divide
Subject: Biology, Cell Biology Create a schematic diagram of a simple experiment which aims to determine if a certain cell membrane component moves in a flip-flop type manner.