The plasma membrane.
plasma membrane
plasma membrane
In animal cells, the cell membrane; and in plant cells, the cell wall.
Transport proteins allow nutrients to enter and leave cells. Transport proteins are peppered throughout the cell membrane. Most molecules need the transport proteins to enter or leave the cell, but it's possible for some molecules, like water, to diffuse through the membrane by osmosis.
red
cell membrane
It can allow nutrients to enter a cell without compromising the integrity of the cell. Semipermeable membranes abound in nature.
cell membrane
In animal cells, the cell membrane; and in plant cells, the cell wall.
Transport proteins allow nutrients to enter and leave cells. Transport proteins are peppered throughout the cell membrane. Most molecules need the transport proteins to enter or leave the cell, but it's possible for some molecules, like water, to diffuse through the membrane by osmosis.
The main function of a cell membrane is to regulate the materials that enter or leave the cell. It ensures that nutrients can enter and wastes can be discarded from the cell.
your body
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Yes it does
cell membrane
The food we eat is broken down into individual, microscopic nutrient molecules which enter the cell.
nutrient are broken down before entering the cell.small parts of nutrients are taken inside a cell be diffusion and passive transport. there is no energy usage this kind of transport. but there are some big molecules that can not enter cell membrane. so there are taken by active transport.(there is a energy usage in active transport).
Prevents foreign material from entering the cell; and allows nutrients and oxygen to enter while letting metabolites (waste or functional chemicals) out.
it regulates what materials enter and leave the cell