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What is the cell membrane which makes some substances can pass through it while others cannot?
The phospholipid bi-layer.
What term describes a cell membrane's ability to let substances through?
Permeable desrcibes allowing substances through. Permeability would describe the ability to let substances through. Cell membranes can be selectively permeable or semi - permeable.
How does lipid solubility affect the ability of substances entering a cell?
If the substance is not lipid soluble, it will not be able to pass through the cell membrane, which is a phospholipid bilayer. This means it will not be able to enter the cell.
What do you call substances that will not let thermal heat pass through them?
thermal insulator
Can CO2 pass through the phospholipid bilayer?
oxygen
What is the cell membrane which makes some substances can pass through it while others cannot?
The phospholipid bi-layer.
The phospholipid sea in which embedded substances float?
Gg
What term describes a cell membrane's ability to let substances through?
Permeable desrcibes allowing substances through. Permeability would describe the ability to let substances through. Cell membranes can be selectively permeable or semi - permeable.
Do all substances pass freely between the intracellular and extracellular fluids through a phospholipid bilayer?
No, the membrane is known as semi-permeable because some substances (such as water) can pass freely through - whereas others (such as ions) cannot.
How does lipid solubility affect the ability of substances entering a cell?
If the substance is not lipid soluble, it will not be able to pass through the cell membrane, which is a phospholipid bilayer. This means it will not be able to enter the cell.
What do you call substances that will not let thermal heat pass through them?
thermal insulator
How does salts enter the cell?
Salts are soluble. The phospholipid bilayer membrane of cell walls are permeable to water and thus allow water and water-soluble substances, like salts, diffuse through.
Which substances may pass through a cell membrane by simple diffusion?
Small, uncharged molecules can pass through the phospholipid bilayer, notably oxygen and carbondioxide.Other substances may pass through channel and carrier proteins by diffusion, sometimes referred to as facilitated diffusion as the proteins facilitate (make possible) the passage of substances that cannot cross the lipid layer. These substances include glucose and a variety of ions that are moving down their concentration gradients.
Can CO2 pass through the phospholipid bilayer?
oxygen
Can you explain the structure and function of semipermeable membrane and phosolipid bilayer?
A cell membrane is composed of a double layer of phospholipids, more commonly referred to as a phospholipid bilayer, and each phospholipid itself is important to the structure and function of the cell membrane. The head of a phospholipid is hydrophilic, attracting water, the two tails are hydrophobic not attracted to water. This means that water can pass through the cell well by passive transport, as the hydrophilic heads draw the water towards them and the hydrophobic tails push the water through the membrane to the other side. The tails of the phospholipid also play an important function, as the chinks in the tail allow the membrane to be fluid and allow substances to pass through (if they do not require active transport).
Does a permeable membrane will let substances pass through it?
Yes it does permeable membranes are membranes that allows all substances to pass through.
Which part of a cell controls what gets in and out?
The plasma membrane / cell surface membrane. The phospholipid bilayer prevents certain substances passing straight through, so protein channels and other mechanisms control what does and does not pass in and out of the cell.
