Crossing a cell membrane by simple diffusion can be distinguished from facilitated diffusion by which of the following: Select all that apply Simple diffusion moves molecules down a concentration gradient while facilitated diffusion moves molecules up a concentration gradient Simple diffusion does not require membrane proteins; facilitated diffusion requires specific membrane proteins Simple diffusion does not require energy; facilitated diffusion requires energy Simple diffusion is not saturable; facilitated diffusion rates are limited by the number of functional membrane proteins and can be saturated

Q: In terms of their effect on the rate of diffusion, which of the following is the odd one out? a)…

A: The process by which molecules move from a region of higher concentration to a region of lower…

Q: Biological membranes are selectively permeable, allowing certain molecules to cross the membrane,…

A: The cells or the plasma membrane is the outermost layer enclosing the cell. It is responsible for…

Q: Contrast simple diffusion with facilitated diffusion.

A: Simple Diffusion means when molecules move through a cell membrane but they do not use the channels…

Q: The following are true statements regarding passive facilitated transport EXCEPT     The process…

A: Diffusion is a defined biological process by which molecules transport through organs. Diffusion is…

Q: Each answer can be used more than once, or not at all. - Simple Diffusion - Facilitated diffusion…

A: Introduction Diffusion is a process which involves the movement of molecules from a high…

Q: Diatomic oxygen (O2) exhibits which of the following membrane transport movements?

A: Membrane Transport allows the transport of molecules across the lipid bilayer. The route through…

Q: An increase in which of the following would decrease rate of diffusion(flux)? (there can be multiple…

A: Diffusion:- is a movement of particles(could be atoms, ions, molecules, etc) from a higher…

Q: A critical feature of the plasma membrane is that it is selectively permeable. This allows the…

A: Selective Permeability of the Plasma MembraneThe plasma membrane's selective permeability is a…

Q: Which of the following is inversely related to the rate of diffusion for certain substance: a-…

A: Diffusion can be defined as a process in which there is movement of moleules takes place from the…

Q: Which of the following affects the permeability constant of a molecule in diffusion? the molecular…

A: The movement of different molecules like gasses, hormones and other molecules along there…

Q: Given what we know about diffusion / the cell membrane, what is able to diffuse and cannot diffuse…

A: The cell membrane can be defined as the outer layer of the cell which is semi-permeable in nature.…

Q: What would happen in each of the following cases where something related to intracellular transport…

A: Peptide has two ends: the end with a free amino group is called the N-terminal amino acid residue.…

Q: When the protein integrin (a transmembrane protein in human fibroblasts) is held in place, by…

A: Integrins are heterodimeric cell surface receptors that are potential therapeutic targets for a…

Q: Which of the following types of molecules can diffuse across a plasma membrane? Choose all that…

A: The plasma membrane controls the passage of substances into and out of cells by being selectively…

Q: Facilitated diffusion differs from active transport in that facilitated diffusion transports…

A: For the transportation of molecules across a cell membrane, the systems meant for it are called as…

Q: Carbon dioxide (CO2) exhibits which of the following membrane transport movements? it can cross the…

A: The cell membrane is a structure which protects the cell and acts as a barrier and transports the…

Q: The movement of a substance across a membrane, from low to high concentrations of that substance…

A: The movement of particles or substances across the cellular membranes happens by diffusion (“simple…

Q: Which of the following will decrease diffusion rate (a.k.a. rate of flux) of a particle across the…

A: Introduction The transfer of a molecule from a high concentration area to a low concentration area…

Q: The cytoplasm of a certain cell is composed of a solution that is 98% water, 2% solutes. Consider…

A: Introduction  Tonicity is a measure of the relative concentration of solutes dissolved in two…

Q: Diffusion is incredibly important for the proper functioning of cells. Our question today is whether…

A: In order to examine the potential role of diffusion in the observed similarities in size and shape…

Q: In figure 4-7 why does facilitated diffusion have a maximum rate of diffusion?

A: In facilitated diffusion, transport of substances across a biological membrane takes place which…

Q: Both simple diffusion and facilitated diffusion B. facilitated diffusion C. simple diffusion D.…

A: The transport of molecules from one area to the other is mainly carried out by two processes. One…

Q: Examine the graph presented here. Using your knowledge of how the processes work, label each curve…

A: Simple diffusion and facilitated diffusion are two types of passive transport of substances across…

Q: Passive transport across the membrane mediated by a carrier—     would not be saturated by…

A: Membrane transport refers to the movement of ions, molecules, and other substances across the cell…

Q: Facilitated diffusion and active transport are two different mechanisms that the cells use to…

A: Answer well explained above

Q: Diffusion stops when: All of the answers listed are correct. all of the material enters the cell.…

A: The plasma membrane of the cell membrane is a lipid bilayer membrane in which proteins are embedded…

Q: Discuss the difference in the solute concentration gradient and rate of diffusion between simple…

A: Diffusion is the movement of molecules in the presence of a concentration gradient. It is a vital…

Osmosis

In simple words, osmosis is the slow, gradual movement of a liquid through a membrane. But there are nuances to this process. For instance, there has to be an imbalance in the distribution of solute in the liquid on either side of the membrane, which has to be semipermeable. The liquid in the region with a lower solute concentration moves to the region with a higher concentration, thereby displacing the solution in the process. The objective is to equalize the concentration of molecules on both sides of the membrane; the displacement of liquid can be viewed as a byproduct of this equalization. Since there is no energy required to carry osmosis, it is considered a passive process.