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 20RQ: Imagine a cell can perform exocytosis, but only minimal endocytosis. What would happen to the cell?...

See similar textbooks

Similar questions

23
In which situation would passive transport not use a transport protein for entry into a cell? water flowing into a hypertonic environment glucose being absorbed from the blood an ion flowing into a nerve cell to create an electrical potential oxygen moving into a cell after oxygen deprivation
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.
Link each process with the correct deﬁnition. RECEPTORMEDIATED ENDOCYTOSIS PHAGOCYTOSIS PINOCYTOSIS EXOCYTOSIS 1. A cell ingests a large particle, such as a bacterial cell. 2. Receptor proteins embedded in the membrane recognize specific surface characteristics of substances. 3. A transport vesicle inside the cell approaches the plasma membrane of the cell, fuses with it, and releases its contents to the outside of the cell. 4. A vesicle containing whatever molecules are in solution outside the cell bulges inward, pinches off, and enters the cell.
U-Tube Diagram The following diagram illustrates a U-shaped tube that contains a semi-permeable membrane that separates the left and right sides. In figure A, the left side contains water (blue) and the right side contains a solution (red). After 24 hours, the results are illustrated in figure B. a) b) 1. Does the semi-permeable membrane allow for the movement of solution? What is your evidence? 2. Does the semi-permeable membrane allow for the movement of water? What is your evidence? 3. Has the left and right side of the tube reached equilibrium? What is your evidence? 4. Explain how the experiment demonstrates osmosis. Include tonicity (hyper, hypo, or iso) in your explanation.
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
Part I – Introduction to Diffusion and Osmosis1. Define the terms diffusion, passive transport, active transport, and osmosis. In each of your definitions, describe the role of a concentration gradient. 2. Biological membranes are said to be selectively permeable (or semi-permeable). What does this term mean, and how does this affect the way that molecules are able to move through cellular membranes? 3. Which type of molecule is more likely to quickly pass through a cellular membrane via simple diffusion, polar or nonpolar? Why? (You may need to use information from your textbook and class discussions to answer this question.)
Please asap
4948: Which of the following statements best describes how substances are transported across a membrane against their concentration gradient? Some membrane proteins act as channels for specific molecules to enter the cell. The plasma membrane is permeable to all small molecules. Some membrane proteins are ATP-dependent carrier molecules. The plasma membrane is fully hydrophobic. Even though humans are approximately 99.9 % identical in their genetic makeup, an incredible amount of variation is seen among individuals of the species. This genetic variation is greatly influenced by the process of meiosis. Based on the following events that occur during meiosis, which contributes most to genetic diversity in the human population? Condensation of chromatin during meiosis I Recombination between homologous chromatids during meiosis I Alignment of sister chromatids at the metaphase plate during meiosis II Separation of sister chromatids during…
part 2
. Describe the general structure of all cell membranes. How does this membrane structure determine the selective permeability of what can pass across the membrane. Then describe 3 ways cell membranes will differ from one another. 2. List and describe the three main types of cell attachments. Make sure your answer includes what they help a cell attach to. If you wanted to do immunocytochemistry to specifically stain each type of cell attachment, what is a protein that could be used for each type of cell attachment (in other words, what is a unique protein for each attachment type)? 3. In a typical neuron, there are ligand gated ion channels and there are voltage gated ion channels. During the electrical communication between two neurons, describe the involvement of these two types of ion channels. 4. What are four common features of all signaling pathways involving transmembrane receptors? Then, describe the pathway of one of the specific signaling pathways we discussed in class…
Q1: In what ways is the plasma membrane a barrier, and in what ways is it a gatekeeper? Q2: Why can’t ions (such as Na+) cross the plasma membrane without the help of a transport protein? Q3: If no energy were available to the cell, what forms of transport would not be able to occur? What forms of transport could occur?

SEE MORE QUESTIONS

Recommended textbooks for you

Biology 2e

Biology

ISBN:

9781947172517

Author:

Matthew Douglas, Jung Choi, Mary Ann Clark

Publisher:

OpenStax

Biology: The Dynamic Science (MindTap Course List)

Biology

ISBN:

9781305389892

Author:

Peter J. Russell, Paul E. Hertz, Beverly McMillan

Publisher:

Cengage Learning

Biology 2e

Biology

ISBN:

9781947172517

Author:

Matthew Douglas, Jung Choi, Mary Ann Clark

Publisher:

OpenStax

Biology: The Dynamic Science (MindTap Course List)

Biology

ISBN:

9781305389892

Author:

Peter J. Russell, Paul E. Hertz, Beverly McMillan

Publisher:

Cengage Learning

SEE MORE TEXTBOOKS