<p> Learning Guide: Water and Biomolecules Part I Bill Activity #17</p><p>To Think About: What properties of the water molecule supports all of life? </p><p>1st Read About: Water and Life Pgs. 46-52 Campbell’s Biology 9th edition  Polar covalent bonds in water molecules result in hydrogen bonding o Describe what a polar molecule is and why water is considered polar. o Sketch several water molecules. Add + and – signs to indicate the charged regions of each molecule. Then, indicate the hydrogen bonds. o Explain hydrogen bonding.  Four emergent properties of water contribute to Earth’s suitability for life. o Create a t-chart that illustrates the difference between cohesion and adhesion of water molecules. Explain why each of these properties is significant to living things. o Water has high specific heat. Describe what this means and how hydrogen bonding contributes to water’s high specific heat. o Summarize how water’s high specific heat contributes to the moderation of temperature. Explain how this property is important to life. o Define evaporation and heat of vaporization. Explain at least three effects of this property on living organisms. o Expansion upon freezing. Describe why this property of water is important. Explain why ice floats and why 4 degrees C is a critical temperature. o Solvent of life. Explain why water is a fine solvent. Define hydrophobic and hydrophilic .</p><p>2nd Interact: Watch Mr. Andersen’s Water: A Polar Molecule video and take notes on it.</p><p>Supplementary Resources: Click the links below for more information to help you learn more about this lesson.  Austin Community College: Dissociation of Water  US Geological Service: Properties of Water  Crash Course Biology: Water—Liquid Awesome Learning Guide: Water and Biomolecules Part II Bill Activity #17</p><p>To Think About: How do molecules and atoms from the environment build new molecules? </p><p>1st Read About: Carbon and the Molecular Diversity of Life Pgs. 58-66 Campbell’s Biology 9th edition (2-sided column notes)  Organic chemistry is the study of carbon compounds o Explain the definition of organic chemistry and list the primary elements of living things o Describe how Stanley Miller bring the abiotic synthesis of organic compounds into the context of evolution.  Carbon atoms can form diverse molecules by bonding to four other atoms. o Make an electron distribution diagram of carbon. List the number of valence electrons, number of bonds and types of bonds it makes with other elements. o Describe how carbon skeletons may vary (four ways), and explain how this variation contributes to the diversity and complexity of organic molecules.  A small number of chemical groups are key to the functioning of biological molecules o Describe how two molecules can be very similar in structure but have very different functions. o Define a functional group. List the functional groups. For each write the formula and sketch their structure (in top purple boxes)</p><p>2nd Read About: The Structure and Function of Large Biomolecules Pgs. 68-69 Campbell’s Biology 9th edition (2-sided column notes)  Macromolecules are polymers, built from monomers o List the four main classes of important large molecules. Define macromolecule and circle the three classes. o Distinguish between a polymer and a monomer; condensation/dehydration reaction and hydrolysis </p><p>3rd Interact: Watch Mr. Andersen’s Polymers video and take notes on it.  Explain how the letters of the alphabet are similar to monomers of a polymer.  Explain the phrase “you are what you eat” in the context of dehydration synthesis and hydrolysis. </p>