× Didn't find what you were looking for? Ask a question
Top Posters
Since Sunday
g
3
3
2
J
2
p
2
m
2
h
2
s
2
r
2
d
2
l
2
a
2
Home Q & A Board Biology-Related Homework Help Cell Biology
New Topic  
msitaly83 msitaly83
wrote...
13 years ago
The purple phototrophic bacteria and the cyanobacteria both generate energy by photosynthesis but differ physiologically and ecologically in the way they do it.  Which of these two photosynthetic organisms has remained more metabolically and ecologically similar to their common ancestor?  Explain the reasoning behind your answer. 
Read 2132 times
1 Reply

Related Topics

Replies
wrote...
#1
Educator
13 years ago
You can find your answer here: http://tinyurl.com/252mevp

According to endosymbiotic theory, chloroplasts in plants and eukaryotic algae have evolved from cyanobacteria via endosymbiosis. Phototrophic bacteria, however, seem more primitive; they do things similar to how primitive bacteria used to metabolize energy - that is, use anything but O2 to undergo photosynthesis.
New Topic      
Quick Reply
Explore
Post your homework questions and get free online help from our incredible volunteers
  910 People Browsing
 161 Signed Up Today
Start New Topic Take the Tour CoursesNew Study Tools Topics Trending Browse by Textbook
Live Chat
Related Images
  
 221
  
 545
  
 953
Your Opinion
Which of the following is the best resource to supplement your studies:
Votes: 249
Previous poll results: Who will win the 2024 president election?