Chapter_25_Learning_Objectives

Chapter_25_Learning_Objectives - Learning Objectives...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
Learning Objectives Chapter 25: The History of Life on Earth Concept 25.1: Conditions on early Earth made the origin of life possible Describe the atmospheric composition of the early Earth. o Methane, carbon dioxide, ammonia, water o NO FREE OXYGEN** Describe the four stages of the hypothesis for the origin of life on Earth by chemical evolution. o Anaerobic o Photosynthesis o Production of oxygen o Aerobic Describe the contribution that Miller and Urey made towards developing a model for the abiotic synthesis of organic molecules. Describe the conditions and locations where most of these chemical reactions likely occurred on the early Earth. o They proved how inorganic molecules were converted to organic molecules with “simulated lightening” Earth prior to life was a reduced atmosphere o Frequent volcanic eruptions, storms and lightening….no ozone so a lot of UV rays, meteorites Describe the evidence that suggests that RNA was the first genetic material. Explain the significance of the discovery of ribozymes.
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 2

Chapter_25_Learning_Objectives - Learning Objectives...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online