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Outline the major steps hypothesized to have occurred in the origin of cells.
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- What did the Miller-Urey experiment demonstrate? A. Life originated in outer space and was brought to Earth on a meteor. B. Complex molecules can be formed from water, carbon dioxide, methane, ammonia, and hydrogen gas in a reducing atmosphere. C. Eukaryotic cells evolved from prokaryotic cells following an endosymbiotic event. D. RNA was the genetic storage merial before DNA.Which is a piece of evidence that supports the endosymbiotic theory? Select all that apply. (Group of answer choices) A. many bacteria are resistant to antibiotics B. eukaryotic cells have cell membranes C. mitochondria have their own DNA D. chloroplast DNA is more similar to cyanobacteria DNA than eukaryotic DNA E. ribosomes are present in eukaryotic cells F. mitochondria must divide to multiply, cells can't build themGiven the sources of evidence, explain precisely how it supports evolution.
- Present three possible explanations for the origin of life.Which phylogenetic model proposes that all three domains of life evolved from a pool of primitive prokaryotes? a. tree of life b. web of life c. ring of life d. network modelIn 40 words or fewer, explain why we think that RNA, and not DNA, was the hereditary material in the first protocell.