Assignment:
1. Remember when I suggested you all place a dry hand under the Dyson hand dryer to see if the air starts out hot even though it normally feels cold when your hands are wet? Whether you did try it or not, explain how the chemical structure of water molecules and the types of bonds the water molecules form and break causes the air to feel cold when your hands are wet even though the air itself it actually hot. Make sure to describe this clearly using terms learned in Chapter 2 about the types of bonds and energy involved.
2. Explain why carbon atoms always form 4 covalent bonds when they are part of molecules. Make sure to explain fully terms about atoms and bonding learned from chapter 2.
3. Starch and cellulose are both polysaccharides made from the same monomer: glucose. Each is a long polymer chain of glucose monomers attached to one another, but somehow these two polysaccharides are able to perform very different functions in a plant. Explain how starch and cellulose are different at a structural level, and how these differences allow them to perform such different functions (make sure to tell me what those functions are).
4. Describe the structure and function of a phospholipid. In your response, make sure to describe the parts that compose a phospholipid, the name of the covalent bond between these monomer parts, and explain how this structure allows phospholipids to perform their function in living cells using terms like polar/nonpolar and hydrophobic/ hydrophilic. You may draw a figure to help you answer the question, but a drawing alone is not an explanation-you must explain it.