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Why are pores in the cell membrane different sizes?
They selectively allow certain size molecules to enter, or not to enter, the cell.
What is aquaporins?
Aquaporins are protein molecules embedded in the phospholipid bilayer (cell membrane ) of some cells. They transport water across the cell membrane.
What is the key structural element of a cell membrane?
The primary structural component of a cell membrane is the phospholid layers. This is mainly made of proteins which facilitate various cell activities.
Each cell is a sort of bag made from a sort skin called a?
Membrane Membrane
What helps the cell hold its shape if it does not have a cell wall?
The cell has a lipid bilayer with embedded proteins that gives it shape. The cell membrane is rather fluid but also slightly rigid. This allows the cell to change shape but it cannot change shape very much. The membrane can seal itself if pierced by something very thin like a pin.The cell membrane holds it together as it's made of phospholipids.
What part of a cell is surrounded by a double membrane with pores?
Cell wall
Does the cell membrane of cells have pores or holes in them?
yes
Openings in the nuclear membrane?
Nuclear pores are the openings in the nuclear membrane that allow the passage of molecules like proteins and RNA between the nucleus and the cytoplasm. These pores are essential for maintaining communication and regulating transport between the nucleus and the rest of the cell.
Does the cell membrane have pores to let good and bad things in and out?
no
Are ion channels cell membrane pores?
Yes, ion channels are protein-based cell membrane pores that allow the passage of ions across the membrane, regulating the cell's resting potential, signaling, and other cellular processes.
What cell organelle has pores that allow certain molecules to leave and enter it?
Cell membrane
What is the cell membrane in the cell?
The cell membrane is the border allowing entry and exit of materials through the cell. Both animal and plant cells have one.
What molecule forms pores and transporters in the cell membrane?
the protein form the
What forms pores in the cell membrane?
Pores in the cell membrane can be formed by protein complexes called ion channels or porins. Ion channels allow specific ions to pass through the membrane, while porins allow the passage of larger molecules or solutes. These pores play crucial roles in regulating the movement of substances in and out of the cell.
Where in the cell is the nuclear pores located?
Nuclear pores are present in the nuclear envelope of a cell. They are specialized protein structures that act as gateways for the transport of molecules such as RNA and proteins between the nucleus and the cytoplasm.
What is track etch membrane?
Track etch membrane is a type of filter membrane made of a polymer material. It contains very small, uniform pores created by high-energy particle irradiation, forming tracks that can be etched to produce the pores. This membrane is commonly used in various applications such as particle detection, cell culturing, and water filtration.
What is the main purpose of freeze fracture?
the cell membrane so its pores and channels can be studied.
