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What membrane components allow movement of non-polar substances across membrane?
Integral proteins allow movement of non-polar substances across membranes.
How do molecules get in and out of cell?
polar molecules are repelled by the cells electrical charge.
What are the special structures in the cell membrane that allow materials such as water and sugar to pass through made o?
membrane proteins act as carriers or channels for the specific movement of various substances in to and out of the cells.
What channel proteins allow water to pass across the membrane?
Aquaporins
What are the special in cell membrane that allow materials such as water and sugar to pass through made of?
proteins
What membrane components allow movement of non-polar substances across membrane?
Integral proteins allow movement of non-polar substances across membranes.
How do molecules get in and out of cell?
polar molecules are repelled by the cells electrical charge.
What are the special structures in the cell membrane that allow materials such as water and sugar to pass through made o?
membrane proteins act as carriers or channels for the specific movement of various substances in to and out of the cells.
Is osmosis a movement of proteins?
No, in osmosis water molecules move from higher water concentration to a lower concentration through a semi-permeable membrane. Proteins are much smaller matter.
What channel proteins allow water to pass across the membrane?
Aquaporins
What are the special in cell membrane that allow materials such as water and sugar to pass through made of?
proteins
Can agarose gel be used to run proteins?
The pore size of an agarose gel is too small to allow the efficient movement of proteins. Therefore, a poly acrylamide gel is used to separate proteins according to size
What is the role of transport and channel proteins within the fluid mosaic of the plasma membrane?
They allow movement of salts and sugars through the plasma membrane
What are three types of passive transport?
Diffusion- is the movement of the substance from an area of higher concentration to an area of lower concentration,Osmosis- is the diffusion of water molecule only through a membrane semipermeable cell membranes allow water to pass through them until equilibrium occurs.Facilitated Diffusion- carrier proteins, and channel proteins it occurs when molecule pass through a cells membrane.
What identifies proteins that allow muscles to shorten or lengthen?
Contractile proteins is the term that identifies the proteins that allow muscles to shorten or lengthen.
The fluid nature of the membrane is attributed to a lateral movement of?
a) proteins b) water c) phospholipids
What are the special structures in the cell membrane that allow materials such as water and sugar through made of?
PROTEIN!!!!!!!!!!!!!!!!!!!!!!!!!
