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Yes, calcium can cross the cell membrane through various calcium channels. These channels can allow calcium ions to move down their concentration gradient into or out of the cell, depending on the specific conditions and signaling processes occurring within the cell.
Yes...typically it will help to drive other solutes across membranes providing energy for the transfer through proteins but it can also cross membranes itself.
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Which is a factor that determines wether a molecule can cross the cell membrane?
Polarity
How does CO2 cross the cell membrane?
CO2 diffuses through the cell membrane by simple passive diffusion due to its small size and non-polarity. It moves from an area of higher concentration to an area of lower concentration until equilibrium is reached.
What process do water molecules cross the cell membrane?
Water molecules cross the cell membrane through a process called osmosis, which is driven by the concentration gradient of water inside and outside the cell. Aquaporin proteins on the cell membrane facilitate the movement of water molecules into and out of the cell.
Ions cannot cross back and forth across the neuron cell membrane?
Ions can cross the neuron cell membrane through ion channels that open and close in response to various stimuli, allowing for the movement of ions in and out of the cell. This movement is essential for action potentials and communication between neurons.
Why must some hormones bind to membrane receptor on a target cell's surface in order to activate it?
Some hormones are unable to cross the cell membrane due to their size or chemical properties, so they must bind to a membrane receptor on the cell's surface to propagate their signal into the cell. This binding triggers a cascade of intracellular events that ultimately lead to the cell's response to the hormone.
What ions are positively charged and can cross back and forth across neuron and cell membrane?
There are two ions that can cross the cell membrane. The positively charged sodium and potassium ions can cross back and forth across the neuron cell membrane.
What is cell membrane permeability?
It is the ability of the membrane to allow ions and/or particles to cross.
What receptor has a ligand that can cross the cell membrane that binds?
Intracellular
Which transport is used to move calcium in or out of the cell?
Calcium is primarily transported into or out of the cell using specialized protein channels called calcium channels. These channels allow calcium ions to move across the cell membrane, either into the cell (via calcium influx) or out of the cell (via calcium efflux). Additionally, calcium can also be transported into the cell by calcium transporters such as ATPase pumps.
What is a factor that determines of a molecule can cross a cell membrane?
Polarity
What is the process where in the diffusion of water cross a cell membrane?
Osmosis
What are two structures that a material would have to cross to enter the cytoplasm of a plant cell?
In order to enter the cytoplasm of a plant cell, a material would have to cross the plasma membrane and then the cell wall. The plasma membrane regulates what enters and exits the cell, while the cell wall provides structural support and protection.
What restores and puts the cell membrane to resting conditions after an action potential?
Calcium
Can steriods and cholesterol cross the cell membrane on their own?
Yes because the cell membrane allows non polar molecules through
What is a factor that determines whether a molecules can cross a cell membrane?
mass
What vitamin promotes the formation of the cell membrane?
Vitamin D promotes the formation of the cell membrane. It helps regulate the production of phospholipids, which are essential components of cell membranes. Deficiency in vitamin D can lead to impaired cell membrane function.
How do materials get in and out of the cell?
Some materials cross the cell membrane by diffusion. Some cross through channels. Some bind to receptors and are actively transported.
