Shared Flashcard Set

Details

Chapter 4
Cell structure and function
8
Biology
Undergraduate 1
02/21/2010

Additional Biology Flashcards

 


 

Cards

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
Supporting users have an ad free experience!