Chapter 3 - Water and the Fitness of the Environment

Chapter 3 - Water and the Fitness of the Environment -...

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

View Full Document Right Arrow Icon
Chapter 3 – Water and the Fitness of the Environment The Molecule that Supports All of Life o Water is the biological medium on Earth. o ¾ of Earth’s surface is water (liquid, ice, and vapor) o It is the only common substance to exist in all three physical states in the natural environment. o All living organisms require water more than any other substance. o Cells are composed of 70-95% water. Properties of simple water molecules allow it to function as a support for all living organisms Structure of water molecule allows interaction with other molecules o The interaction leads to unique emergent properties that support and maintain living systems Develop a conceptual understanding of how water contributes to the fitness of Earth for life. 3.1 The Polarity of Water Molecules Results in Hydrogen Bonding o Two hydrogen covalently bonded. o Polar covalent because the electrons spend more time closer to the oxygen atom. o
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.

This note was uploaded on 02/09/2009 for the course BISC 220LG taught by Professor Mcclure during the Spring '07 term at USC.

Page1 / 2

Chapter 3 - Water and the Fitness of the Environment -...

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