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What best determines whether a molecule crosses a cell membrane?
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What is a factor that determines whether molecule can cross a cell membrane?
size/ polarity can be the factors
Does the size or the speed of a molecule determines whether it can pass through the pores of a membrane?
The speed doesn't necessarily determine the permeability, but the size does. Smaller molecules such as O2 can easily enter the cell while CO2 leaves the cell. There are other criteria that also determines whether a molecule can pass through the plasma membrane such as its solubility. Fat soluble molecules such as steroids can easily pass through the membrane.
Which feature of a cell membrane determines whether molecules can cross the membrane?
They must either be lipid soluble (e.g. steroids) or very small (e.g. ions).
What determines whether a solute is hydropholic or hydrophobic?
What determines a molecule's solubility degree in water is its polarity. Equals dissolve.
What factor other than electronegativity determines whether a molecule as a whole is polar or not?
The shape of the molecule is a big indicator. If the molecule looks like it has some symmetry to its shape, and its poles are directly opposite of each other, then there it`s a good bet that it`s non polar.
What is a factor that determines whether a molecule cross a cell membrane?
size/ polarity can be the factors
What is a factor that determines whether molecule can cross a cell membrane?
size/ polarity can be the factors
Does the size or the speed of a molecule determines whether it can pass through the pores of a membrane?
The speed doesn't necessarily determine the permeability, but the size does. Smaller molecules such as O2 can easily enter the cell while CO2 leaves the cell. There are other criteria that also determines whether a molecule can pass through the plasma membrane such as its solubility. Fat soluble molecules such as steroids can easily pass through the membrane.
Which molecule of a membrane describes whether molecules can cross the membrane?
permeability
What feature of a membrane describes whether molecule can cross the membrane?
permeabiity
What determines whether carbon dioxide is absorbed or released by blood?
The rate at which carbon dioxide enters the cell is determined by the concentration of carbon dioxide on each side of the membrane. Carbon dioxide crosses the plasma membrane by simple diffusion.
What is a factor that determines whether a molecules can cross a cell membrane?
mass
Which is a factor that determies whether a mole can cross a cell membrane?
Lipid solubility determines if it will diffuse across. The presence of specific protein carrier molecules determines if it will be transported across the membrane.
What is a factor that deteremines whether a molecule can cross a cell membrane?
Usually its size and net charge.
Which feature of a cell membrane determines whether molecules can cross the membrane?
They must either be lipid soluble (e.g. steroids) or very small (e.g. ions).
What does the fluid mosaic model?
The fluid mosaic model represents the structure of the plasma membrane. It shows that the plasma membrane consists of a phospholipid bilayer ( with hydrophilic heads- which face the interior and exterior of the plasma membrane- and hydrophobic tails) as well as transport proteins namely carrier proteins and pore proteins. The size and polarity of a molecule determines how it will pass through the semi-permeable plasma membrane whether by simple diffusion, osmosis, facilitated diffusion or active transport.
What determines whether electrons are shared equally or non equally in a covalent bond?
It depends on the electronegativity of the atoms in the molecule. When an atom has a higher electronegativity than the others in the molecule, the electrons will have a higher affinity for that side, making the molecule polar.
