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Quick answer: glucose

Explanation: Any substance that the membrane selects against requires integral proteins to cross the membrane. B/c the lipid bilayer is selectively permeable, not all substances can pass through it by diffusion or osmosis. However, when the cell requires a substance that it's membrane does not easily allow to pass through, it must enter via the proteins in the membrane. They can either be carrier proteins or protein channels depending on the substance. One example of a substance which requires facilitated diffusion is glucose.

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13y ago
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Fatty acid

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amino acids

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Q: What substances would most likely require a protein to facilitate its diffusion across a cell membrane?
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Related questions

What happens during the process of faciltated diffusion?

An Integral Membrane Protein Assists A Specific Substances Across The Membrane.


What happens during the process of faciliated diffusion?

An integral membrane protein assists a specific substances across the membrane.


Movement across the cell membrane made possible by a protein embedded in the cell membrane?

It is a selectively permeable membrane that allows certain substances in and out, but keeps harmful substances from entering the cell. It could be compared to the security guard at the door of an airport that makes sure that nobody dangerous gets in or out.


What happens in the process of facilitated diffusion In what part of the membrane does it take place?

In facilitated diffusion, substances will still diffuse down their concentration gradient but they make use of a transport protein.


Is facilitated diffusion?

Facilitated Diffusion is the movement of molecules across cell membranes through protein channels and carrier proteins.Facilitated diffusion is a passive transport process, aka no energy required, where substances move down their concentration gradient (high concentration to low concentration) across a protein through a membrane protein because it is unable to diffuse directly through the phospholipid portion of the membrane itself.Diffusion of molecules assisted by protein channels that pierce a cell membrane


What is the difference between diffusion and facilitate diffusion?

The difference between diffusion and facilitated diffusion is that facilitated diffusion is that the molecules pass through special protein channels.


How are the 3 passive transports different?

Simple diffusion - High concentration to low concentration, no energy required osmosis - Movement of water across a membrane, no energy required facilitated diffusion - Movement of substances, protein's are used to help move the substances across the membrane. There are very basic summaries of each.


Facilitated diffusion and active transport?

Facilitated diffusion = down concentration gradient, it just uses a carrier protein (doesn't need energy)Active transport =goes UP concentration gradient with the help of a carrier protein and ENERGY


What are the main characteristics of facilitated diffusion?

both require special carrier molecule to move substances across the membrane


Which type of transport occurs when a membrane protein binds to a molecule on one side of the cell membrane and then releases it on the other side?

well daa its facilitated diffusion :] -Aime-


What type of protein is found in the cell membrane which regulates the coming and going of substances into and out of the cell?

Membrane Protein


What is a type of protein found in the cell membrane which regulates the coming and going of substances into or out of the cell?

Membrane Protein