0
Is osmosis the way very small molecules get in and out of the cell by passing through small openings in the cell membrane?
Wiki User
∙ 12y ago
Yes.
As well, larger molecules, that are permitted entry into the Cell by other means, transport themselves throughout the Cytoplasm to numerous destinations including the Nucleus via, it would appear, diffusion.
Wiki User
∙ 13y ago
Wiki User
∙ 12y agono, diffusion is and check your textbook it is probabl in there. Just for future reference. A lot of times answers are hidden so try your glossary.
Add your answer:
Earn +20 pts
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.
Water molecules diffuse through a selectively permeable membrane?
Water diffuses by facilitated diffusion, passing through water permeable protein channels embedded in the cell membrane. Water molecules can not pass through the lipid bilayer because water is polar. However, polar molecules pass though the cell membrane through the protein channels. The proteins that aid water in passing through the cell membrane are called aquaporins. "Aqua" for water, and "porin" for pore. A "water pore" in essence.
What is osmotic?
The root word in osmotic is osmosis. Osmosis is the act of water or fluid passing through a thin membrane. Osmotic is when fluid, like water absorbs through a membrane into a liquid solution.
Why is osmosis special type of diffusion?
Osmosis is considered a specialised type of diffusion because it ONLY involves water passing from a region of high water potential to an area of low water potential through a partially-permeable membrane. Osmosis takes place primarily in our small intestines, where water is absorbed.
Describe how the diffusion of ions across a cell membrane differs from the diffusion of nonpolar molecules across the cell membrane?
Ions need to be facilitated through a cell membrane because they are passing through a phospholipid bilayer with a hydrophobic interior. Non polar molecules are also hydrophobic, so they can pass through the membrane easily if they are small enough. Ions are polar, so they have a hard time passing through membranes.
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.
Give the difference between diffusion and osmosis?
diffusion- it is the type of passing of liquid from one part to another. it has semi-permeable membrane to pass the liquid. osmosis-it is the type of passing liquid but it has no membrane.
Water molecules diffuse through a selectively permeable membrane?
Water diffuses by facilitated diffusion, passing through water permeable protein channels embedded in the cell membrane. Water molecules can not pass through the lipid bilayer because water is polar. However, polar molecules pass though the cell membrane through the protein channels. The proteins that aid water in passing through the cell membrane are called aquaporins. "Aqua" for water, and "porin" for pore. A "water pore" in essence.
What is osmotic?
The root word in osmotic is osmosis. Osmosis is the act of water or fluid passing through a thin membrane. Osmotic is when fluid, like water absorbs through a membrane into a liquid solution.
Why is osmosis special type of diffusion?
Osmosis is considered a specialised type of diffusion because it ONLY involves water passing from a region of high water potential to an area of low water potential through a partially-permeable membrane. Osmosis takes place primarily in our small intestines, where water is absorbed.
Which organelle in a cell allows for the passage of proteins?
Nuclear Pores, Openings in the nuclear membrane allow the passing of proteins.
What prevents ions and most large molecules from passing through the membrane?
vacuoles
How do particles move through a permeable membrane according to diffusion?
Yes, that is very true, especially with osmosis (the passing of water through a selectively permeable membrane).
List one way osmosis is the same as diffusion?
A substance is passing through a membrane across a concentration gradient to the point of equilibrium.
When the cell itself plays an active role in the passing of molecules through its membrane?
active transport
What is membrane permeability?
Membrane permeability refers to the ability of molecules, substances, etc. to pass through the membrane. For example, the cell membrane is referred to as 'semi-permeable' because it allows some molecules (such as water) to enter, and stops other molecules (such as sodium ions) from passing through the membrane. If these want to get into the cell, they must then rely on proteins in the cell membrane to let them in.
Diffusion is the movement of a sustance?
Diffusion is the movement of particles in a substance through a semi permeable membrane. Osmosis is similar but only involves water particles passing through a semi permeable membrane.
