The outward movement of protons (H+),

difference between channels and transporters is that O Only channels allow for the passage of solutes against their electrochemical gradient. OTransporters allow for a greater rate of transport across a membrane than channels do. O Only channels allow for the transport of ions. Transporters must undergo a conformational change upon binding to the solute.

Rate of diffusion through a membrane is: Group of answer choices Inversely proportional to the surface area of the membrane. Directly proportional to the thickness of the membrane. Directly proportional to the concentration gradient. All of the above.

How is active transport different from simple diffusion? Both active transport and simple diffusion transport molecules against the concentration gradient. In active transport, molecules are moved down the concentration gradient; on the B contrary, molecules to be transported in simple diffusion are moved against the concentration gradient. In active transport, molecules are transported with the aid of transport proteins; on the © other hand, molecules to be transported in simple diffusion do not need transport proteins. In active transport, molecules that are transported does not need metabolic energy; in contrast, molecules transported in simple diffusion need metabolic energy.

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

Without saturation of transport proteins and under the same concentration gradient how can the speed of simple diffusion be compared to the speed of facilitated diffusion?

Select the correct statments regarding transport of molecules across the cell membrane.     Non-mediated transport is susceptible to saturation of transporter/channel proteins.     Channels and transporters need not use energy to transport solute down the concentration gradient.     The Na+/K+ antiport takes advantage of electrochemical gradients to exchange Na+ and K+ ions across the cell membrane.     Active transport via electrochemical gradients relies on the passive transport of one solute to transport a second solute against the concentration gradient. Describe the three main sources of membrane fluidity

Why is glucose being represented as line B? 

Which of the following does not characterize the different factors that affects the rate of diffusion? Mass of molecules diffusing Solute density Temperature Extent of concentration gradient

Discuss the methods that the cell is able to get the molecules needed for normal functions using the following terms.Active TransportPumpsATP Concentration Gradient (with and against)Simple DiffusionFacilitated DiffusionPassive TransportProteinsPhospholipids