Eukaryotes probably originated about
A) four billion years ago.
B) two billion years ago.
C) four million years ago.
D) three billion years ago.
E) three million years ago.
Correct Answer:
Verified
Q6: Photosynthesis probably originated during the _ eon
Q15: The Russian chemist Oparin suggested that for
Q16: The first cells probably arose about
A)500 million
Q19: Chloroplasts arose by endosymbiosis of _.
A)an aerobic
Q20: The endoplasmic reticulum,Golgi body,and other membranous organelles
Q21: A prokaryote that occupies a habitat that
Q25: A prokaryote that occupies a habitat consisting
Q31: The domain (domains)that contain prokaryotes is (are)
A)ArchaeA.
B)Bacteria.
C)both
Q38: The rigid barrier that surrounds most prokaryotes
Q39: The three most common shapes of bacteria
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