Penny Glows: catalysts
A catalyst is a substance that greatly accelerates a chemical reaction and yet does not directly participate in the reaction and is therefore not consumed. Dr. Cech uses a penny and a beaker of acetone to illustrate how a catalyst works. It can be used like a model for biochemical reactions. Penny's in living cells are called enzymes. Also featured on the DVD The Double Life of RNA, available free from HHMI
Channels: Experiments Biochemistry Others
Uploaded by: siere ( Send Message ) on 02-08-2007.
Duration: 5m 40s
