You grow cells in the lab in the presence of radioactively labeled oxygen gas. Which cell metabolite will show the most radioactivity after a few minutes? O water O carbon dioxide O reduced NAD ATP

You have isolated a bacterium which is a strict, obligate aerobe. You expose the bacterium to oxidative phosphorylation uncouplers. What will first happen to the bacterium, if anything? O electron transport by the ETC will stop O nothing will happen to the bacterium O the proton gradient will be diminished thus reducing ATP synthesis O proton pumping will stop

Which classes of molecules are also directly produced from TCA cycle intermediates? O DNA Steroids Porphyrins O Proteins

label all 5 identified regions in the active site, (labels like basic catalytic residue, acidic catalytic residue, catalytic nucleophile, etc.)