Want this question answered?
Water molecules freely diffuse across a semipermeable membrane.
The membrane is semi-permeable. Sugar molecules are too large to diffuse through.
Lipid-soluble molecules such as O2 and CO2 diffuse freely through the plasma membrane.
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.
No, there are specific cell membranes that allow only certain molecules to pass through. Some stay open and others must be opened ( like a gate ).
Glucose is too big to pass through.
Water molecules freely diffuse across a semipermeable membrane.
The membrane is semi-permeable. Sugar molecules are too large to diffuse through.
Oxygen molecules diffuse across the membrane.
osmosis
Osmosis
Lipid-soluble molecules such as O2 and CO2 diffuse freely through the plasma membrane.
Glucose is too big to pass throught.
Carbon dioxide, oxygen and some nonpolar molecules diffuse easily.
semi-permeable.
glucose molecules will diffuse out of the cell. apex
The Cell membrane contains the insides of the cell. The membrane is also selectively permeable, allowing nonpolar molecules to simply diffuse into the cells, such as lipids, steroid based hormones, CO2, etc. It also allows small polar molecules to diffuse through, such as H2O.