Researchers looking for fossils of the earliest life forms face many hurdles. For example, few sedimentary rocks date back more than 3 billion years. Recall what you learned about plate tectonics. Explain why so few remaining samples of these early rocks remain.

Researchers looking for fossils of the earliest life forms face many hurdles. For example, few sedimentary rocks date back more than 3 billion years. Recall what you learned about plate tectonics. Explain why so few remaining samples of these early rocks remain.

Biology 2e

2nd Edition

ISBN:9781947172517

Author:Matthew Douglas, Jung Choi, Mary Ann Clark

Publisher:Matthew Douglas, Jung Choi, Mary Ann Clark

Chapter4: Cell Structure

Section: Chapter Questions

Problem 8RQ: Which of the following organisms is a prokaryote? a. amoeba b. influenza A virus c. charophyte algae...

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1. Researchers looking for fossils of the earliest life forms face many hurdles. For example, few sedimentary rocks date back more than 3 billion years. Recall what you learned about plate tectonics. Explain why so few remaining samples of these early rocks remain.

2. The antibiotic penicillin acts by interfering with the production of new bacterial cell walls. Bacteria exposed to penicillin do not die immediately, but they cannot reproduce. Explain why.

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