Department of Energy Argonne National Laboratory Office of Science NEWTON's Homepage NEWTON's Homepage
NEWTON, Ask A Scientist!
NEWTON Home Page NEWTON Teachers Visit Our Archives Ask A Question How To Ask A Question Question of the Week Our Expert Scientists Volunteer at NEWTON! Frequently Asked Questions Referencing NEWTON About NEWTON About Ask A Scientist Education At Argonne Heterotroph Hypothesis
Name: Mike D.
Status: Student
Age: 14
Location: N/A
Country: N/A
Date: N/A 


Question:
According to the heterotrophic hypothesis, autotrphs developed after the evolution of heterotrophs partly because the primitive environment of the earth lacked - was it carbon dioxide?



Replies:
Autotrophs need a carbon source and photosynthesis does utilize carbon dioxide for this reason. Photoheterotrophs and other heterotropic organisms may have provided the carbon that allowed for photosynthesis to evolve. Of course, all this is hypothetical.

Steve Sample



Click here to return to the Molecular Biology Archives

NEWTON is an electronic community for Science, Math, and Computer Science K-12 Educators, sponsored and operated by Argonne National Laboratory's Educational Programs, Andrew Skipor, Ph.D., Head of Educational Programs.

For assistance with NEWTON contact a System Operator (help@newton.dep.anl.gov), or at Argonne's Educational Programs

NEWTON AND ASK A SCIENTIST
Educational Programs
Building 360
9700 S. Cass Ave.
Argonne, Illinois
60439-4845, USA
Update: June 2012
Weclome To Newton

Argonne National Laboratory