Card Set Information
Chapter 3/5 Topics 1,2,3
Which organelle contains DNA and is enclosed by a double bi-layer nuclear envelope?
The contents of a cell, excluding the nucleus, is referred to as _______.
What is the selectively permeable outer boundary of a cell?
Cell (Plasma) Membrane
The _______ is the structural and functional unit of an organism.
The structures within a cell that house biochemical reactions that carry out specific functions are _______.
What is the fluid portion of cytoplasm?
A membrane that allows some types of molecules through but not others is ______________.
What is the basic framework of the cell membrane?
The water soluble “head” of a phospholipid is _______.
The water insoluble “tail” of a phospholipid is _______.
Which model describes how lipid “rafts” and protein components can within the cell membrane?
Fluid Mosaic Model
Proteins that penetrate into the phospholipid bi-layer are ______________.
Which protein passes completely through the phospholipid bilayer?
Trans Membrane Protein
Proteins which remain on the surface of the phospholipid bi-layer are ______________.
What type of molecules enable cells to stick to each other?
Cell Adhesion Molecules (CAMs)
Which type of proteins are openings or “pores” that remain open so that water and electrolytes can pass through?
_______ are channel proteins which open/close based upon certain circumstances.
Which gate opens when a certain chemical attaches to it?
A gate that opens when a certain voltage is reached is a ______________.
What type of gate opens when it is affected by heat, stretching, etc.?
_______ are trans membrane proteins which bind to glucose and electrolytes to transfer them to the other side of the membrane.
_______ catalyze chemical reactions.
Which proteins act as a cell’s “ID tag”?
Cell Identification Markers