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The cell membrane contains channels and pumps that help move materials from one side to another What are these channels and pumps made of?
Wiki User
∙ 13y ago
There are many different protein channels that only allow one substance to go in or out of the cell.
For example, there is a specific channel for gluclose,and no other substane can go through that channel
Wiki User
∙ 13y ago
Wiki User
∙ 12y agoThey are made of proteins and protein conjugates.
Wiki User
∙ 15y agomade of lipids made of lipids
Wiki User
∙ 13y agoIt's either lipids or proteins. Sorry that wasn't much help.
Wiki User
∙ 13y agoLipids
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In what way do the membranes of a eukaryotic cell vary?
Eukaryotic cells are a type of cell that has a membrane bound nucleus and membrane bound organelles. Prokaryotic cells are another type of cell, more primitive that it lacks a nuclear envelope yet not so primitive that it contains no membrane bound organelles!
Which organelle conveys or transports materials throughout the cell?
The endoplasmic reticulum.Both the smooth and the roughendoplasmic reticulum consist of membranous channels that all connect with one another and with the nuclear membrane. They are both involved in the transport of materials from one part of the cell to another.The smooth endoplasmic reticulum is also involved in the synthesis of lipids, and the rough endoplasmic reticulum, which has ribosomes embedded in its membrane, is the site of much of the cell's protein synthesis.
What is the conducting unit of the nerve tissue?
The axon is the conducting part of the neuron. It conducts the impulse from the cell body to the terminals, where ion channels open in response to the impulse, mediators are activated, neurotransmitter crosses synapse and attaches at the post-synaptic membrane, opening the ion channels there and depolarizing the cell, and propagating the impulse towards another cell body via the post-synaptic cell's axon.
What kind of cell has a nucleus surrounded by its own membrane and other internal cell parts bounded by membranes?
All cells that have a nucleus have a nuclear membrane. All nuclei are contained within a nuclear compartment which is surrounded by a membrane; sort of a balloon within another balloon.
What is the function of protein channels in the cell membrane?
transport
What is selecticely permeable?
Selective permeability usually refers to the ability of a membrane to regulate the movement of materials. An intervening membrane can physically prevent a solute from diffusing down its concentration gradient. This allows cells, for example, to maintain a cytoplasm with a different composition than the extra-cellular fluid. A membrane may contain protein channels for the passive diffusion of a specific substance, actively acquire or discharge others, and have no channels to facilitate the movement of another. Thus, the membrane is selectively permeable for different solutes, usually depending on the needs of the cell.
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.
What are the communications channels that exists in cell walls that enable plant cells to interact with one another?
Plasmodesmata are membrane-lined channels between plant cells that allow materials to move among cells, but communications occur via signalling hormones that may or may not move through plasmodesmata. Some do, and others move through the matrix of cell walls that lies between the individual cells in the plant.
What is passageways that carry proteins and other materials from one part of a he cell to another?
endoplasmic reticulum
How do transport vesicles integrate the endomembrane system?
Because they can actually incorporate themselves into the system, the vesicle membrane turns part of the membrane in that location. In the end, they take materials from a part of a cell to another.
How do the membrane proteins prevent subtances from entering or exiting or exiting the cell?
membrane proteins are like signals that require activation and energy (in this case ATP) much like most processes in the human body. membrane proteins exist between layers of other cells and can act as channels from one side of a membrane to another in many cases with out anything physically being transfered through the cell membrane.
What is the difference in the function of the proteins and the carbohydrates attached attached to a cell membrane?
proteins form channels and pumps that help to move material across the cell membrane. carbohydrates act like chemical identification cards, allowing individual cells to identify one another.
How do properties of lipid help explain the structure of a cell membrane?
Lipids have hydrophilic (water loving) heads, and hydrophobic (tails). Therefore, the tails face one another while the heads face out to the water. And if particles must pass through the cellular membrane that are hydrophilic they must go through protein channels within the cell membrane.
Another Name for the plasma membrane of?
the cell membrane
What is another word for plasma membrane?
cell membrane
What is another name for the phospholipid?
Another name for the phospholipid bilayer is the plasma membrane or the cell membrane.
In what way do the membranes of a eukaryotic cell vary?
Eukaryotic cells are a type of cell that has a membrane bound nucleus and membrane bound organelles. Prokaryotic cells are another type of cell, more primitive that it lacks a nuclear envelope yet not so primitive that it contains no membrane bound organelles!
