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H hehe
Lupe Hahn
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What is the barrier around the that lets substances move across it?
cell surface membrane
Which part of plant cells prevents substances to go into and out of this cell?
The cell Membrane allows substances to go in and out
What controls which substances can move in and out of a cell?
The cell membrane regulates the movement of substances in and out of the cell.How does it do this? The phospholipid bilayer is impermeable to most substances, allowing across only small, uncharged molecules such as those of oxygen, carbon dioxide, and water. The only way for other substances to cross the membrane is via transport proteins (channel and carrier proteins). These are selective, and therefore control what enters and what leaves the cell.
What do substances disslove in before entering a cell?
Substances such as enzymes can dissolve in lipids before entering a cell. They can also dissolve in the cell's membrane.
What does the cell membrane let in and out?
It could be the cell wall? I"m not sure.
What is a description of the cell membrane?
The cell membrane lets substances in and out of the cell.
What controles the movement in and out of the cell?
Inside of a cell it is the cell membrane which lets substances pass into the cell, and out. The cell wall is used to keep the shape of the cell the same.
In the plant cell What cell lets substances in and out?
A plant cell has a cell membrane which controls the movement of substances in and out of the cell. :D
What is the barrier around the that lets substances move across it?
cell surface membrane
What is found around the cell and lets materials in and out of the cell?
A cell membrane surrounds all cells and controls the movement of substances.
Do substances enter any plant or animal cell by passing through a cell membrane?
Molecules can not pass through the cell membrane, because endocytosis is important for those large molecules that can not pass through the cell membrane!!
Is the absence of cell wall in animal cell necessary?
The cell wall is essential part of animal cells.it creates a barrier so that the cytoplasm remains in the cell and lets only the useful substances inside the cell i.e. it is semi permeable.without the cell wall the cell material would disperse and harmful substances would enter it and it will die. The presence of cell wall in animal cells is necessary,not the absence.
What is the term selectively permeable?
This term describes an object to be selective on which material it lets pass through it or go into it. The term usually refers to the cell membrane, because it only lets certain substances through.
Cell membrane what does a cell membrane to in a plant?
It lets nutrients into the cell, and lets out wastes from it.
What is the difference between semi-permeable and impermeable?
semi permeable lets some substances through and impermeable lets no substances through
How do large substances get into and out of cells?
Exocytosis takes substances out of the cell and endocytosis brings substances into the cell.
What is the job of the cell membrance?
To let things travel in and out of the cell
