Quorum sensing is an ability some bacteria have to detect the number of related cells nearby. The chemical structure of some of these molecules found in certain species of bacteria are shown in Figure I. Vibrio fischeri Vibrio harveyi OH Pseudomonas Perugino Figure I. The chemical structure of several molecules used for quorum sensing in three species of bacteria Which of the following research questions would best guide an investigation of the link between the structure of the signaling molecules and the evolution of quorum sensing? vie Previ (A) Do these molecules require the same receptors in each bacteria species to generate a response? (B) Did these species evolve from a common ancestor that used a similar signaling molecule?

Name two similarities between alcohol and lactic acid fermentation [what do they start with, when do they occur, what is the purpose, etc). What is the difference between the two types of fermentation?

Compare and contrast the processes of Photosynthesis and Cellular Respiration. Include a definition or equation for each process in your response.

Compare and contrast the Socratic Method of the ancient world with the Scientific Method used in modern scientific study. (This question is based in part on readings in Plato to Darwin to DNA.)

Explain the normal and abnormal histologic representation of the organ affected if a patient diagnosed with GERD or Gastroesophageal Reflux Disease