Q7. A SimCell with a water-permeable membrane that contains 20 hemoglobin molecules and 480 watermolecules is placed in an extracellular fluid that contains 40 dextrose molecules and 960 water molecules.Which of the following should happen?More water molecules will flow from the SimCell into the extracellular fluid than from the extracellular fluid into theSimCell.More water molecules will flow from the extracellular fluid into the SimCell than from the SimCell into theextracellular fluid.There will be no movement of water molecules across the membrane.Water molecules will move back and forth equally across the membrane.

The membrane is "water-permeable", so water can freely diffuse across it.- The extracellular fluid…

Answered: Q7. A SimCell with a water-permeable…

Biology 2e

2nd Edition

ISBN:9781947172517

Author:Matthew Douglas, Jung Choi, Mary Ann Clark

Publisher:Matthew Douglas, Jung Choi, Mary Ann Clark

Chapter5: Structure And Function Of Plasma Membranes

Section: Chapter Questions

Problem 11RQ: In which situation would passive transport not use a transport protein for entry into a cell? water...

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Similar questions

Using the principle of diffusion, a dialysis machine removes waste solutes from a patients blood. Imagine blood runs through a cylinder wherein diffusion can occur across an artificial selectively permeable membrane to a saline solution on the other side. Which of the following statements is correct? a. Solutes move from lower to higher concentraction. b. The concentration gradient is lower in the patients blood than in the saline solution wash. c. The solutes are transported through a symport in the blood cell membrane. d. The saline solution has a lower concentration gradient of solute than the blood. e. The waste solutes are actively transported from the blood.
Imagine a cell can perform exocytosis, but only minimal endocytosis. What would happen to the cell? The cell would secrete all its intracellular proteins The plasma membrane would increase in size over time The cell would stop expressing integral receptor proteins in its plasma membrane The cell would lyse.
What happens to the membrane of a vesicle after exocytosis? It leaves the cell It is disassembled by the cell It fuses with and becomes part of the plasma membrane It is used again in another exocytosis event.
A scientist compares the plasma membrane composition of an animal from the Mediterranean coast with one from the Mojave Desert. Which hypothesis is most likely to be correct? The cells from the Mediterranean coast animal will have more fluid plasma membranes The cells from the Mojave Desert animal will have a higher cholesterol concentration in the plasma membranes The cells’ plasma membranes will be indistinguishable The cells from the Mediterranean coast animal will have a higher glycoprotein content, while the cells from the Mojave Desert animal will have a higher lipoprotein content.
Discuss why the following affect the rate of diffusion: molecular size, temperature, solution density, and the distance that must be traveled
Water moves via osmosis. throughout the cytoplasm from an area with a high concentration of other solutes to a lower one from an area with a high concentration of water to one of lower concentration from an area with a low concentration of water to higher concentration
In what important way does receptor-mediated endocytosis differ from phagocytosis? It transports only small amounts of fluid It does not involve the pinching off of membrane It brings in only a specifically targeted substance It brings substances into the cell, while phagocytosis removes substances.
Why are ion channels necessary to transport ions into or out of a cell? Ions are too large to diffuse through the membrane. Ions are charged particles and cannot diffuse through the hydrophobic interior of the membrane. Ions do not need ion channels to move through the membrane. Ions bind to carrier proteins in the bloodstream, which must be removed before transport into the cell.
Which type of epithelial cell is best adapted to aid diffusion? squamous cuboidal columnar transitional
The principal force driving movement in diffusion is the. temperature particle size concentration gradient membrane surface area
How does the sodium-potassium pump make the interior of the cell negatively charged? by expelling anions by pulling in anions by expelling more cations than are taken in by taking in and expelling an equal number of cations
Because they are embedded within the membrane, ion channels are examples of ________. receptor proteins integral proteins peripheral proteins glycoproteins

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