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it moves large molecules or molecules that are not soluble in lipids across across the cell membrane.

(Pg. 101 in science book...1st para.)

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Maeve Christiansen

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2y ago
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12y ago

Proteins help molecules move in the cell membrane.

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Q: What role do carrier protein play in facilitated diffusion?
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What role do carrier protiens play in facilitated diffusion?

facilitated diffusion is also called cell-mediated diffusion because a substance transport in this manner diffuses through the membrane using a specific carrier protein to help.first, carrier protein binds to the binding site of the carrier protein ,and then there is a conformational change in the shape of the carrier protein that helps the molecule to diffuse other side of the membrane.


What occurs when substances move against the concentration gradient requires and the aid of carrier proteins?

Carrier molecules are molecules that play a role in transporting electrons through the electron transport chain. Carrier molecules are usually proteins bound to a nonprotein group; they can undergo oxidation and reduction relatively easily, thus allowing electrons to flow through the system. There are four types of carrier: flavoproteins (e.g. FAD), cytochromes, iron-sulphur proteins (e.g. ferredoxin), and ubiquinone.


What role do active and passive transport play in absorption?

Sodium ions are actively transported out of the epithelial cells by the sodium-potassium pump into the blood, this takes place in one type protein-carrier molecule There is now a much higher concentration of sodium ions in the lumen than inside of the epithelium cells The sodium ions diffuse into the epithelial cells through a different type of protein carrier, as the sodium ions flood back in through this second carrier protein they couple with te glucose molecules which are carried into the cell with them The glucose passes into the blood plasma by facilitated diffusion using another type of carrier


Diffusion and facilitated diffusion?

Diffusion:Diffusion describes the spread of particles through random motion from regions of higher concentration to regions of lower concentration. The time dependence of the statistical distribution in space is given by the diffusion equation. The concept of diffusion is tied to that of mass transfer driven by a concentration gradient, but diffusion can still occur when there is no concentration gradient (but there will be no net flux). diffusion is invoked in the social sciences to describe the spread of ideas.Facilitated diffusion:Facilitated diffusion (also known as facilitated transport or passive-mediated transport) is a process of passive transport, facilitated by integral proteins. Facilitated diffusion is the spontaneous passage of molecules or ions across a biological membrane passing through specific transmembrane integral proteins. The facilitated diffusion may occur either across biological membranes or through aqueous compartments of an organism


How does size play a role in diffusion?

no answer.


What role does diffusion play?

it plays the cool side


What NFL team does Derek Carrier play for?

Derek Carrier plays for the San Francisco 49ers.


What role does diffusion play in cellular respiration?

well ask yourself what does diffusion mean and compare it to cellular respiration and photosynthesis


What position does Derek Carrier play?

Derek Carrier plays Tight End for the San Francisco 49ers.


What college did NFL player Derek Carrier play for?

NFL player Derek Carrier played for Beloit.


What role does active transport play in diffusion?

active transport is kind of like diffusion, but unlike diffusion, it requires ATP(energy) and the molecule moves from low concentration to high concentration


What role did diffusion play in the changes you observed?

Before diffusion there is a higher concentration of oxygen molecules outside the cell than inside the cell. After diffusion the concentration of oxygen molecules is the same outside and inside the cell.