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they either break down and then leave the cell through the pores, or they just don't get out of the cell
Wiki User
∙ 12y ago
Really big molecules, such as proteins or DNA, can exit the cell through a process called exocytosis. In exocytosis, the large molecule is packaged into a vesicle within the cell and then fuses with the cell membrane, releasing the molecule outside the cell. This is an active process that requires energy.
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What substances normally fail to cross cell membranes under any circumstances?
Big molecules and charged molecules or atoms.
When does all motion of molecules stop?
When the temperature reached absolute zero (0 Kelvin or -273 Celsius), all molecular motion ceases.
In general the net movement of small uncharged atoms and molecules through the membrane of a cell will occur until?
Molecules will move into or out of the cell until it becomes isotonic to its surroundings. This means that the concentration of the molecules inside the cell is equal to the concentration of the molecules outside the cell.
How atom and molecules are important to cell processes explain?
why atom and molecules are important to cell processes explain
In which process dose the cell use a vesicle to move molecules out of the cell?
Exocytosis is the process that moves molecules from the inside of the cell to the outside. This process uses sacs or vesicles to move the molecules out.
Why oxygen molecules do not across a cell membrane while glucose molecules do not?
Glucose is too big to pass throught.
Does molecules have cell?
No, molecules do not have cell, rather a cell have molecules in it.
Why do molecules easily diffuse across a cell membrane while glucose molecules do not?
Glucose is too big to pass throught.
What substances normally fail to cross cell membranes under any circumstances?
Big molecules and charged molecules or atoms.
What explains why oxygen molecules diffuse across a cell membrane while glucose molecules do not?
Glucose is too big to pass through.
When does all motion of molecules stop?
When the temperature reached absolute zero (0 Kelvin or -273 Celsius), all molecular motion ceases.
Glucose is a molecule that can move across the cell membrane if the concentration of glucose is high or inside the cell than outside the cell then what will happen by the process of diffusion?
glucose molecules will diffuse out of the cell. apex
What statement explains why oxygen molecules easily diffuse across a cell membrane which glucose molecules do not?
Glucose is too big to pass throught.
What are the protein molecules in a cell membrane that assist in cell transport?
Protein molecules are responsible for membrane transport. In passive transport diffusion is the phenomenon in which molecules flow naturally from areas of high concentration to lower concentrations.
What would happen if glycolsis did not happen in a cell?
If glycolysis could not happen in a cell, the cell would not produce ATP molecules.
Which part of the cell surrounds the cell and allows molecules in and?
The cell membrane is the thing that surrounds the cell. The cell membrane contains proteins that allow active transport of molecules in and out of the cell.
State the approximate width of the cell membrane?
Cell membranes are normally 7.5-10 nm in thickness with two layers of lipid molecules containing protein molecules.
