Biology 219 Exam 1 Prep with Questions and Answers

Biology 219 Exam 1 Prep with Questions and Answers What are the three tenants of cell theory? ANSWER 1. All cells come from other cells, 2. All living organisms are composed of one or more cells, and 3. the cell is the basic unit of structure What are the four main elements in the body? ANSWER Oxygen, Carbon, Hydrogen, Nitrogen Nearly all interactions within cells are driven by __________ level interactions and ______________ effects. ANSWER molecular level; hydrophobic Rank the types of bonds in the cell from strongest to weakest ANSWER covalent, ionic, hydrogen Non-polar things are dispersed by ______________ things ANSWER polar Cellular structures are built by _________________ entropic effects arising from interactions with ___________. ANSWER spontaneous, water In this image of a lipid bilayer, the polar head interacts with water via which type of interaction? ANSWER hydrogen bonds The two phases of the lipid bilayer interact via which type of interaction? ANSWER hydrophobic interactions