Oxygen is needed for aerobic cellular respiration because

2,4 dinitrophenol (DNP) is a lipid soluble compound that has been used as a weight loss agent. It causes the inner mitochondrial membrane to leak protons. Compared to untreated cells, cells treated with 2,4 DNP would have 

FIRST — Use your camera to show a 365 room image, include the room, plus the ceiling, plus the floor.  Scoring of this exam will not proceed without this scan. Next — select “true” to certify that you have followed these instructions. Scoring of this exam will stop at this point if the scan is not conducted.

You are designing a pin to heal a fractured forearm. You are trying to decide between a metal rod that will yield at 50 MPa of stress and a composite rod that will yield at 33 MPa of stress. Assuming the slip plane of the rod is oriented as in the figure below, and the rod will experience an applied stress of 105 MPa, which rod would you choose for this application and why?  

You are comparing two different processing methods used for forming Ti6Al4V into a femoral stem of a hip joint prosthesis. The following diagram shows the structures that result from the two methods. Which of the two processing methods results in a material with a higher ultimate tensile strength? Why?

You are developing a gold microparticle for a clinical application. In order to make the particle more biocompatible, you want to coat a monolayer of protein on the surface. (1) What characterization technique(s) would be best to determine the morphology of the surface of the microparticle and (2) which technique(s) would you use to determine the size and/or affinity of the proteins on the microparticle surface. 

In a ternary materials system where two phases are in equilibrium, how many externally controllable variables can be chosen to define the state of equilibrium?

At what temperature do you expect three different phases to be present in a Cu-Pb system? If there is more than one temperature, pick one.

A single crystal of silicon is doped with 0.1 at. % of X. At small concentrations, the Si-X system is known to follow a regular solution model with

You respond to a cafeteria to find an unconscious person with gurgling sounds upon exhalation and inhalation. What is the probable cause of the respiratory sounds?