Expert: Walter Hintz - 10/29/2007

Question
Hi I have a question dealing with photosynthesis.  I cant really understand even though ive read it over and over.
Chemiosmosis and its role in the light-dependant reactions?
The light dependant reactions: How they work and what they do?    and the Other Question I had was Genetic Code:  the structure of a Codon why 3 bases are needed to code for 20 amino acids. I saw this website and would appreciate it if you could help me.

Answer
During the light reaction photons of light are captured. The photon knock electrons to higher orbits and greater potential energy.  The electrons are picked up by transport molecules and returned to the lower levels releasing energy that is used to hook phosphate molecules to ADP. According to chemiosmosis theory some of the energy is used to protons (H+) from the stroma in the chloroplast into the thykaloid.
 
Codons: Since there are four symbols in the genetic code it takes at least three to meet all possible combination of nucleotides.