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By design ;
proteins residing within the membrane provide both passive pores (holes) in the membrane as well as active transport across the membrane.
Wiki User
∙ 12y ago
Wiki User
∙ 11y agoA cell membrane is considered semi-permeable because materials and fluids can pass in and out, however the access is restricted.
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What is a Non-example of cell membrane?
cyclic nucleotides and deoxyribonucleic acid (DNA) ribonucleic acid in some forms four carbon rings fused together are a misconception of cell membrane but are actuall part of cell walls
What regulates passage of materials into and out of cells?
The cell membrane controls movement of materials in and out of the cell.
Which cell structure controls what enters and leaves the cell?
The selective permeability of the cell membrane
What cell structures are made primarily from phospholipids?
cell membrane
What controls entry into and out of the cell?
Cell Membrane
What goes in and out of cell is controlled by?
Semipermiable membrane of the cell. Plants : Cell wall. Animals : Cell membrane.
Define the structure and function of the cell membrane plasma membrane?
The cell membrane consists of a lipid bilayer which is actually a phospholipid. Cell membranes are semipermiable and they regulate what enters and leaves the cell.
Feature of the plasma membrane that maintains homeostasis within a cell by allowing some molecules into the cell while keeping others out?
Being semipermiable it keeps out things that would hurt the cell as well as keeping the amount of good things (water/proteins) at a stable amount.
What is a Non-example of cell membrane?
cyclic nucleotides and deoxyribonucleic acid (DNA) ribonucleic acid in some forms four carbon rings fused together are a misconception of cell membrane but are actuall part of cell walls
Which biomolecules make up the cell membrane?
Only the http://wiki.answers.com/Which_organelles_are_made_of_plasma_membrane#membrane is made of phosophlipids as a semipermiable membrane. No other structures are made from it.There are, however, organelles which are surrounded by a plasma membrane. These include nucleus, http://wiki.answers.com/Which_organelles_are_made_of_plasma_membrane#, peroxisomes, lysosomes and chloroplasts (in plants).*taken from another answer*Read more: http://wiki.answers.com/Which_organelles_are_made_of_plasma_membrane#ixzz17ZxEF1Z3
What regulates passage of materials into and out of cells?
The cell membrane controls movement of materials in and out of the cell.
Which cell structure controls what enters and leaves the cell?
The selective permeability of the cell membrane
What cell structures are made primarily from phospholipids?
cell membrane
What structure controls the passage of substances into and out of the cell?
cell membrane
What controls entry into and out of the cell?
Cell Membrane
What is the thin flexible membrane around all cells?
the cell membrane is as flexible barrier outside of the cell.
Where is the cell control center and the cell membrane?
where is the cell control membrane and the cell membrane
