17 December 2006
The Evolution of Biology
Posted by admin under: Aerobics .
Gayrleen Blemur
Colette Abichaker
The Evolution of Biology
In our video, we attempted to provide a connection between many of the topics we covered in this semester’s Biology I: Evolution class. We wanted to start with the discussion of a selective pressure that had a profound impact on natural selection and evolution—oxygen. The introduction of oxygen into the Earth’s atmosphere through photosynthetic organisms enabled the development of pathways such as aerobic respiration from the initial, anaerobic pathway of glycolysis. We were able to connect glycolysis to aerobic respiration through endosymbiosis. In essence, we discussed how the oldest pathway led to the current one we use today. The effects of oxygen acting as a selective pressure and the resulting adaptation of endosymbiosis dictated the course of evolution and explains the presence and function of chloroplasts and mitochondria in aerobic metabolism today.
Duration : 0:2:38 Views : 1236.