The earliest photosynthetic autotrophs were probably:
A) similar to the green and purple sulfur bacteria of today.
B) first formed about 1 billion years ago.
C) the first organisms to release oxygen.
D) obligate aerobes.
E) fermenting heterortrophs.
Correct Answer:
Verified
Q1: The first cells were most likely heterotrophic
Q30: Experiments called in vitro evolution or directed
Q31: The theory that eukaryotic organelles originated as
Q32: The first enzymes were probably:
A) protein reproducing
Q33: The results of the experiment represented in
Q34: The first cells were probably:
A) autotrophic aerobes.
B)
Q36: A significant reduction in the amount of
Q38: Organisms whose metabolic processes are harmed by
Q39: Cyanobacteria can be found in columns of
Q40: Protobionts produced by abiotically produced polypeptides are
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