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Why cant proteins and polysaccharides diffuse through the membrane like water does?
Wiki User
∙ 15y ago
As the pore radius of the membrane approaches the protein radius, the mobility of the protein is significantly reduced
Wiki User
∙ 14y ago
Wiki User
∙ 15y agothey are too big well...i think
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What substance will diffuse through a membrane?
The three substances that can diffuse through a cell membrane are CO2, O2, AND H2O.
What occurs when water molecules diffuse through a membrane?
osmosis
Occurs when water molecules diffuse through a membrane?
Osmosis
What is a transport process by which gases move through a membrane?
Simple Diffusion
Does facilitated diffusion use transport proteins?
Passive diffusion across lipid bilayers :Small apolar molecules like O2 and C02, or ethanol diffuse across the bilayer.Polar or charged molecules do not cross the membraneActive transport :Membrane proteins, such as pores, canals, transporters, facilitators regulate diffusion across membranes.Within membranes :Lipid and proteins diffuse laterally (on the membrane plane).
Why cant proteins and polysaccharides diffuse through the membrane like water?
they are too big is the simple answer - water is a tiny molecule when compared to even the smallest protein
Polysaccharides cross the plasma membrane through diffusion?
Yes, carbohydrates can diffuse through a plasma membrane. Proteins can also pass through the fluid membrane, as well as a few other things.
Why proteins and polysaccharides cannot diffuse through the membrance?
They are too large and usually contain hydrophilic regions which prevent movement across the hydrophobic core of the plasma membrane.
Which substances did not diffuse the membrane?
starch doesnt diffuse through the dialysis membrane.
What substance will diffuse through a membrane?
The three substances that can diffuse through a cell membrane are CO2, O2, AND H2O.
Why are proteins and polysaccharides cannot be transported across a cell membrane by carrier proteins?
They are too large to be transformed by carrier proteins. They are moved across by Vesicles instead.
How do materials get into and out of the cell?
Through proteins in the membrane.
Why do sugar molecules not diffuse through a plant cell membrane?
The membrane is semi-permeable. Sugar molecules are too large to diffuse through.
What helps molecules diffuse across membrane through transport proteins?
A process known as passive transport helps molecules to diffuse across a membrane. Passive transport does not involve the use of chemical energy, unlike active transport does.
Which substance did not diffused through the membrane?
starch doesnt diffuse through the dialysis membrane.
What will not diffuse through the cell membrane?
Glucose
How do transport proteins make make it easier for certain molecules to diffuse across a membrane?
Facilitated diffusion is the diffusion of molecules.across a membrane through transport proteins. Transport proteins make it easier for molecules to enter or exit acell. But the process is still a form of passive transport.
