Exam 2 Study Guide

Exam 2 Study Guide - Biology Exam 2 Study Guide Origin and...

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Biology Exam 2 Study Guide Origin and Evolution of Prokaryotes Chapter 16 The earliest forms of life that existed were stromatolites they were photosynthetic mats that existed where their was wetness and sun light Prokaryotic Had no competition Diminished because the created an environment hostile to themselves The first instance of “animals” came in the Pre-Cambrian era but this was almost 2 billion years into the development of life Scientist Stanley Miller proposed how organic compounds arose (explains how life arose from nonliving material - Because of the lack of oxygen in the atmosphere, “reduction” happened and molecules came together Prokaryotes are divided into two categories Archea Extreme environment (have evolved to being able to exists in some competitive environments) Bacteria Most commonly known ( antibiotics, disease, cultured, bio-warfare) Three Shapes of Prokaryotes Cocci (sphere) Bacillus (rod) Spirillus (spiral) Bacteria have several structures that have them thrive:
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Exam 2 Study Guide - Biology Exam 2 Study Guide Origin and...

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