Evolving Concept of Life Based on Emerging Pieces of Evidence

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What is the main focus of Module 1 in Earth and Life Science?

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The evolving concept of life based on emerging pieces of evidence.

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What is the significance of studying the history of life?

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Understanding the past allows us to predict the future and helps in creating it.

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What are stromatolites?

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Layered structures created by the activity of microorganisms, particularly cyanobacteria.

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What type of organisms were the first to appear on Earth?

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Prokaryotic organisms.

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What is the evidence for a last universal common ancestor among life on Earth?

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They share the same underlying molecular biology.

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What are biomarkers?

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Substances that occur predominantly in cells of a specific type, used in the study of eukaryotes.

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What is the significance of the oxygen revolution?

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It allowed the evolution of cellular respiration, which used oxygen to help harvest energy from organic molecules.

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What is the role of fossils in understanding the history of life?

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Fossils provide evidence of past life forms and their evolution.

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What is the difference between prokaryotic and eukaryotic cells?

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Prokaryotic cells lack a true nucleus, while eukaryotic cells have a true nucleus.

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What is the Cambrian Explosion?

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A significant event in Earth's history when a rapid diversification of life forms occurred.