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Why do water and small electrically charged molecules move easily through pores in the plasma membrane?
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Why can oxygen water and carbon dioxide move through the cell membrane but salt and protein cannot?
That depend on size and the charge.Large molecules and charged molecules cannot move freely
Why do passenger molecules need to be helped by the carrier protein?
Some molecules can't go through the cell membrane.
What is a membrane protein that allows specific charged molecules to pass through from one side of the membrane to another?
A membrane protein that permits the passage of specific substances is selectively permeable. They allow the solvent as specific solutes to pass through.
Which molecules difuse through the lipid portion of the plasma membrane?
Only nonpolar (hydrophobic) molecules can pass through the bi-lipid membrane. For example, hormones are nonpolar, and they can pass through 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.
How easy or hard is it for polar molecules to pass through the cell membrane?
Polar molecules are effectively charged molecules. It's hard for them to cross the cell membrane because the membrane is comprised of an uncharged phospholipid bilayer. Charged molecules tend to have specific protein channels that allow them to cross the membrane.
What is partly permeable?
A membrane, such as the cell membrane, which allows only certain types of molecules (usually small and non charged ones) to pass through it freeely.
How do small molecules get through the cell membrane against a concentration?
How do small molecules get through a cell membrane
Which organelle has a semi permeable membrane and separates the cell from it's environment?
The cell membrane (or plasma membrane) shows semi-permeability. In short some substances, such as gases and small electrically-neutral molecules CAN pass, while others like glucose and other large polar molecules CANNOT pass. Although glucose and other large polar molecules cannot pass through the semi-permeable cell membrane, they may enter through the interior of transport proteins.
Why can oxygen water and carbon dioxide move through the cell membrane but salt and protein cannot?
That depend on size and the charge.Large molecules and charged molecules cannot move freely
How can you show that something is electrically charged?
Pass it through an electric field, if it changes direction then it is charged.
What allows all molecules to pass through cell membrane?
Transport proteins allow charged molecules to pass through the cell membrane. The process of facilitated diffusion, a type of passive transport, allows transport proteins to take charges molecules into the cell.
Why do passenger molecules need to be helped by the carrier protein?
Some molecules can't go through the cell membrane.
What is a membrane protein that allows specific charged molecules to pass through from one side of the membrane to another?
A membrane protein that permits the passage of specific substances is selectively permeable. They allow the solvent as specific solutes to pass through.
Which molecules difuse through the lipid portion of the plasma membrane?
Only nonpolar (hydrophobic) molecules can pass through the bi-lipid membrane. For example, hormones are nonpolar, and they can pass through 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.
When do molecules not get through the cell membrane?
when your not breathing
