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Q: What helps things pass in or out of the cell if they cant do it on their own?
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What allows things to pass in out of the cell?

cell membrane


What structure allows certain things to pass in and out of the cells?

The cell membrane allows only certain things to pass in and out of the cell.


What structure allow only certain things to pass in and out of the cell?

The cell membrane allows only certain things to pass in and out of the cell.


Does the cell membrane let things pass through it?

Yes the cell membrane lets things past through it. The cell wall does not allow things to pass through.


What is a selectively permeable cell membrane?

Things can pass in and out through the cell.


What stucture allows only certain things to pass in and out of the cell?

Cell membrane


What does a plant cell membrain do?

A plant's Cell Membrane is very thin and lets things pass in and out of the cell.


What only allows certain substances in and out of a cell?

The permeability of the cell membrane controls which substances may pass in or out of the cell.


Why does the cell membrane need to be semi-premable?

Semi-permeable means that which only allows certain things to pass through. The cell membrane needs to be semi permeable so that it only allows beneficial things (say, ions or water molecules) into the cell whilst keeping harmful things out (eg. toxins and viruses). That's all. Hope this helps you (:


What are four things that the cell wall allows to pass into and out of the cell?

Water, sucrose, ions, amino acids and proteins with molecular weight less than 20,000 can pass through the cell wall


Which part of the cells lets things pass but not others?

That would be cell membrane.


Why is cell membrane useful to the cell?

The cell membrane surrounds the protoplasm of a cell and separates the intracellular components from the extracellular environment. The cell membrane also helps in anchoring the cytoskeleton to provide shape to the cell, and in attaching to the extracellular matrix and other cells to help group cells together to form tissues.