How does the plasma membrane control what goes into and out of a cell?
It controls what goes in and out of the cell because it a semi-permeable membrane. It is like the lock and key theory, if a molecule is too big, then it won't fit through the membrane. The membrane controls what goes in and out also by making sure the cell is always equal, which is called equilibrium, it will continuously pass things through the membrane to try to reach equilibrium.
The cell membrane controls the traffic of molecules into and out of the cell, prevents the entry of toxic mate?
The cell membrane controls the traffic of molecules into and out of the cell, prevents the entry of toxic material into the cell and permits selective uptake of nutrients. Which property of the membrane can this be attributed to? A. Carbohydrates present on the membrane B. Lipid bilayer of the membrane C. Membrane fluidity D. Semi-permeable nature of the membrane
How does the cell membrane controls the movement of substances in and out of a cell?
They asked me if I can answer this question. It’s a great question! My response is, I can answer this question but so much is speculation. Nobody really knows the complete answer past the point of saying that it’s a complicated combination of biochemical regulatory mechanisms. There are theories. Some of the answer can be demonstrated quite well but we are talking about something that is occurring on a nanoscale…. that’s a billion times smaller than us and just as complicated.That would be comparable to trying to understand traffic patterns in New York if you’re the size of the solar system, a daunting prospect. Don’t get me wrong, scientists are trying to do this. It just isn’t easy and it isn’t simple to explain where the understanding now exists.Google explains this to some extent under “Cell Membranes “. But, if you really want to know the details of what scientists know to the extent that it is known versus what we educationally think and what we’re just guessing, theoretically speaking, perhaps it would be more beneficial if you take a course, and/ read one of many excellent references e.g. Berk Lodish, Biology of the Cell Membrane [on ]Function…best of luck.
How does a plasma membrane control the passage of materials into and out of a cell?
A plasma membrane is also called a cell membrane. It is semi-permeable. A cell membrane is made up of a lipid bilayer. A lipid bilayer is made up of phospholipids. Each phospholipi has one polar heads and two nonpolar tails. This aligns the heads to face the exterior (the ctyosol of the cell and the exterior environment) while the tails face each other. There are also proteins embedded in the membrane that help molecules that cannot diffuse/easily diffuse across the membrane diffuse into/out of the cell. Its basic job is to regulate what goes in or out of a cell.
The cell membrane controls the traffic of molecules into and out of the cell, prevents the entry of toxic mate?
Yes, it is D, but WHY? Because the membrane is not permeable to all substances, and most toxins do not have the chemical composition to pass through the membrane either by passive diffusion, assisted diffusion or active transport. In other words, they are shaped incorrectly or have the wrong molecular makeup to be accepted by the cell.
Why does the cell membrane control the movement of substance in a cell?
Cell membrane is a selectively permeable membrane. It allows only specific required substances into the cell. Also, it permits only certain specific substances to go out of the cell.Cell membrane has specific carrier proteins and pumps which transports substances in and out of the cells by means of facilitated diffusion and active transport.This control system is required for proper metabolism in a cell (and thus, in an organism). If this was absent, anything and everything would go inside and also get out of the cells at any time.