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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 is the process by which large molecules enter a cell through pouches in the membrane?
Phagocytosis
What parts of of the membrane help large molecules pass through it?
Globular proteins.
How do most molecules cross the cell membrane?
Diffusion or if the molecules are too large they go through the transport proteins.
What are the parts of the membrane help large molecules pass through it?
Globular proteins.
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 prevents ions and most large molecules from passing through the membrane?
vacuoles
What part of the membrane helps large molecules pass through?
Globular proteins.
What parts of of the membrane help large molecules pass through it?
Globular proteins.
What is the process by which large molecules enter a cell through pouches in the membrane?
Phagocytosis
How water molucleus move through the cell membrane doing out mosis?
During osmosis, water molecules move through the cell membrane by passing through microscopic openings in the membrane. The openings are large enough for the water molecules to pass through.
How do most molecules cross the cell membrane?
Diffusion or if the molecules are too large they go through the transport proteins.
What can you conclude about the permeability of potato cytoplasm with respect to sucrose and water molecules?
H20 molecules can pass through the membrane freely, however sucrose molecules are too large.
How do you large molecules and ions pass through the cell membrane?
Recently had a homework on the cell membrane, i do know that larger molecules that cant fit through the polar heads into the cell (like gases can...and small molecules?!) can get through only if they qualify the shape fitting of the channel protein- the one that reaches all the way from the outside to the inside of the membrane. hope this helps
How do large polar molecules enter the cell?
The polar molecules goes through facillated diffusion. The molecules goes through the channel or membrane protein which then goes inside the cell.
If a membrane was not permeable to sugars why would it probably also not be permeable to starch molecules?
If a membrane is permeable to a substance, it means that there are gaps/holes/pores in the membrane large enough for that substance to pass through. Starch molecules are bigger that sugar molecules. So if the membrane is not permeable to sugars, the gaps/holes/pores will not be big enough for starch molecules to pass through either.
How do molecules that are too large to cross the membrance enter into the cell?
If the large molecule won't pass through the membrane by diffusion, it might be dragged through the membrane by "endocytosis".
