Multiple Choice
Oxygen released by ____ accumulated in early Earth's atmosphere and produced the ozone layer.
A) archaeans
B) aerobic bacteria
C) cyanobacteria
D) early eukaryotes
E) protocells
Correct Answer:
Verified
Correct Answer:
Verified
Q1: Mitochondria were incorporated into eukaryotes after chloroplasts.
Q2: Four of the five answers represent likely
Q3: The oldest multicellular eukaryote, a(n) _, can
Q5: A protocell is capable of self-replication.
Q6: Which organism arose first?<br>A)archaea<br>B)animals<br>C)fungi<br>D)plants<br>E)protists
Q7: Cyanobacteria are ultimately responsible for the ozone
Q8: Metabolism may have begun when _ within
Q9: Ribosomes can catalyze formation of peptide bonds.
Q10: All species on Earth today are descended
Q11: Who demonstrated the possibility of producing organic