Subject: How did biologists discover each step in Aerobic respiration (Formation of

How did biologists discover each step in Aerobic respiraton (Formation of Acetyl Coenzyme A, 
Kreb cycle, and the electron transport chain)?  

We are freshmen at John F. Kennedy Highschool and are taking General Biology as one of our 
classes.  Currently, we are studying cellular respiration and are interested in knowing how the 
biologists discovered the process of aerobic respiration.  In class, we have learned the steps in 
forming the end products in aerobic respiration.  We are puzzled by how biologists were able to 
actually know all that was taking place during aerobic respiration.  For example, what instruments 
were used to examine what was occuring in th cell during respiration?  This is what inspired us to 
go deeper into the discovery of aerobic respiration. 

We would greatly appreciate it if you could find the opportunity to respond with an answer to our 
question.  If not, we still thank you for all of your time and hope you enjoyed reading our commentary.  
Thanks again! 


Sincerely, 
Kim Tan
Kimmie Won 
Bang Nguyen


c/o Ms. St.John
rstjohn@webtv.net

Re: How did biologists discover each step in Aerobic respiration (Formation of