Details

Title: Chapter 4

Description: Cell structure and function

Total Flash Cards: 8

Created: 02/21/2010 10:03:26

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Term
Eukaryotic cell
 Definition
_______ cells divided into various functional compartments, including a nucleus.
Term
Plasma membrane
 Definition
Cell's outer membrane. It seperates metabolic activities from events outside of the cell-doesnt isolate cell's interior.  Water, carbon dioxide, and oxygen cross it freely. Others can cross with assistance of proteins
Term
Nucleus
 Definition
Double-membraned sac that holds a eukaryotic cells DNA- where a eukaryotic cells life starts
Term

Nucleus

 

Nucleoid

 Definition
DNA inside a prokaryotic cell is concentrated in a of cytoplasm called the ________
Term
cytoplasm
 Definition
Semifluid mixture of water, ions, sugars, and proteins between the plasma membrane and the region of DNA- Cell components and others are suspended in cytoplasm
Term
Ribosomes
 Definition
Structures on which proteins are built - cytoplasm holds many of these
Term
lipid bilayer
 Definition
  • structural foundation of all cell membranes
  • Double layer of lipids that organize so that their hydrophobic tails and sandwhiched between their hydrophilic heads.
  • most abundant type of lipid in cell membrane
  • Proteins form channels
Term
 Definition