0
The Cell membrane is composed of phospholipids, which consist of a hydrophilic (water loving) head and two hydrophobic (water fearing) fatty acid chains. Because cells are in an aqueous environment (in water), the phospholipids naturally form into a bilayer, where the heads face out and protect the tails (facing in) from water. Because of this structure, any substance that does not dissolve in water and is small, can easily pass through the membrane. Substances that do dissolve require special proteins embedded in the membrane. For water, a protein called an Aquaporin acts as a channel to allow water in and out. Some small molecules that can dissolve will sometimes pass through the membrane slowly under certain conditions as well. As long as the conditions are correct, water, glucose, and some forms of iodine can pass through the cell membrane in this manner.
Wiki User
∙ 12y ago
Wiki User
∙ 12y agoYes - That is how osmosis/reverse osmosis works
Wiki User
∙ 12y agoIodine is permeable because it can pass through or penetrate a substance or material unlike starch, for example, whose molecules are to large to penetrate through something
Wiki User
∙ 11y agoyes because it fits through the holes of the cell membrane... i think
Wiki User
∙ 14y agoyes, of couse....if you've dye a cell with iodine you'll know.
Wiki User
∙ 13y agoCharged ions like sodium and potassium can not pass through a lipid membrane unless it is through a special pore in the membrane.
Wiki User
∙ 12y agoyes and without much trouble
Add your answer:
Earn +20 pts
The neuron's cell membrane permits some substances to pass through but not others this is because the membrane is?
One of the characteristics of a cell membrane is that it is semi-permeable. As such, it is able to limit what can get into and out of the cell.
Molecules can pass through the cell membrane of the human cell?
The molecules that can pass through the cell membrane of the human cell include water. Other molecules include fat soluble vitamins.
What is the part of the cell that materials pass through?
The membrane
Does the cell membrane let things pass through it?
Yes the cell membrane lets things past through it. The cell wall does not allow things to pass through.
What structures allow large important molecules to pass through the cell membrane?
A cell membrane is in every plant and animal and it lets in water, nutrients, and food to the cell. The membrane MUST be permeable because then it wouldn't of let the in water, nutrients, and food into the cell. If the membrane was stiff, the molecules of water, nutrients, and food would not be able to fit into the cell.
The neuron's cell membrane permits some substances to pass through but not others this is because the membrane is?
One of the characteristics of a cell membrane is that it is semi-permeable. As such, it is able to limit what can get into and out of the cell.
Molecules can pass through the cell membrane of the human cell?
The molecules that can pass through the cell membrane of the human cell include water. Other molecules include fat soluble vitamins.
What do transport dos?
Transport proteins help move (or "transport") large molecules that aren't able to pass through a cell's membrane, through said cell membrane through means of diffusion.
Do chemicals pass in and out of a cell through openings of the nucleus?
No they pass through the cell membrane. The cell membrane is selectively permeable to ions and organic molecules
What is the part of the cell that materials pass through?
The membrane
Does the cell membrane let things pass through it?
Yes the cell membrane lets things past through it. The cell wall does not allow things to pass through.
What part of the cell membrane allows small molecules to pass through?
the cell membrane
What is the semipermeable membrane?
The cytoplasm of a cell is surrounded by a cell membrane or plasma membrane. The membrane is said to be 'semi-permeable', in that it can either let a substance pass through freely, pass through to a limited extent or not pass through at all.the membrane is somewhat effective at letting fluids through
Can Hydrogen peroxide pass through a cell membrane?
yes, H2O2 passes through cell membrane through passive transport.
What is a nucleur membrane?
it protects the nucleus from anything outside of a cell if able to pass throgh the cell membrane.
How are the smaller molecules o2 and co2 able to pass through the openings of the cell membrane?
passive transport by diffusion
What part of the cell must nutrients pass through to get into the cell?
The Cell Membrane
