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Ch.3 Cell Structure
#2
10
Biology
10th Grade
02/24/2006

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Term
What do the polar phospholids do?
Definition
The polar head attracts water molecules which are also polar forming hydrogen bonds.
Term
What does the nonpolar phospholids do?
Definition
The nonpolar zone of the lipid bilayer seperates the cell from its surrondings.
Term
The pushing and pulling of phospholids by water results in the formation of the _________ _________
Definition
Lipid Bilayer
Term
these are embedded within the lipid bilayer which allow the cell to communicate with the outside world and are called ____ _______ ________
Definition
cell surface proteins
Term
How are the surface proteins anchored into the membrane?
Definition
The cell surface proteins are anchored by the membrane's nonpolar middle region
Term
What are the 3 types of cell surface proteins that each play a role on the life of a cell?
Definition
channels,receptor proteins and cell surface markers.
Term
These have a series of nonpolar amino acid sequences which move back & forth creating a channel through the membrane
Definition
Channels
Term
The cells of our bodies differ from one to the other due to types of ______
they have.
Definition
channels
Term
These are specialized to transmit information from the outside worls to the cell's interior
Definition
Receptor Proteins
Term
A ________ of the right shape must fit into the _______ causing a change at the opposite end of the _______, thus triggering responses within the cell.
Definition
1. Molecule
2. Receptor
3. Receptor
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