Ch. 3 Objective: Define a cell, identify its three regions by their function, and describe the structure of a cell membrane
What are the two types of membrane proteins?
integral proteins and peripheral proteins
Peripheral proteins
loosely attached to integral proteins. These proteins are responsible for shape.
What does the cell membrane do?
controls what goes in and out of the cell
Interstitial fluid
Fluid that surrounds cells
Intracellular fluid
Fluid that's found inside a cell
Extracellular fluid
Fluid that's found outside the cell
Cytoplasm
Free floating fluid/jelly like substance
The plasma membrane acts as a barrier and separates what two fluids from each other?
Intracellular fluid and extra cellular fluid
Cell membrane is another word for
Plasma membrane
What are the three basic parts/regions of cells?
Plasma membrane, cytoplasm, nucleus.
Plasma membrane
The outer layer of the cell
What builds and makes up the cell (plasma) membrane?
The phospholipid bilayer
Cell
The structural and functional unit of life
Integral proteins
these proteins allow transportation of information in and out of the dell