Chapter 3. Life Science
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3.4
[4]
Bernoulli’s Principle. URL: https : / / www . princeton . edu / ~asmits / Bicycle _ web / Bernoulli.html (cited on page 24).
[5]
Dihedral. URL: https://www.grc.nasa.gov/ www / k - 12 / airplane / geom . html (cited on page 26).
[6]
Tail Arm. URL: https : / / www . amaflightschool.org/getstarted/how-doi - understand - basic - aerodynamics (cited on page 27).
The Inhibitive Effect of Salicylic Acid on Martian Catalase By Ilyas Khan ’22 Background: Catalase is a crucial enzyme for all aerobic life on Earth. By breaking down H2 O2 or Hydrogen Peroxide into water and oxygen, catalase prevents the creation of hydroxyl groups which can destroy DNA and other building blocks of cellular life. How catalase behaves can also be an indication of how closely two organisms are related, or if they are related at all. This experiment tests a recently discovered Martian form of catalase with Terrestrial catalase inhibitors. It is well documented that at a concentration between 100 µM and 10 mM, salicylic acid will inhibit most varieties of Terrestrial catalase. If this holds true in Martian catalase, its similarities could help determine the relatedness of Terrestrial and Martian Discussion: species. The data collected displays a clear lack of understandConcentration in M and Absorption of control re- ing around the functioning of the Martian catalase enzyme. action solutions as measured after three-minute With little difference between control and treatment trials, this form of catalase may not function the same way as trial: the catalase found on Earth. However, there is not suffiTime(min) [H2 O2 ] (M) A500 cient data to rule out the possibility that all differences Blank 0 0 can be accounted for by various errors in the process of 0 0.00246 1.3 the experiment. This is particularly plausible because 0.5 0.00116 0.614 of the discrepancies between the initial data points and 1 0.00121 0.638 trendlines. 1.5 0.00085 0.448 2 0.000417 0.22 References 2.5 0.000239 0.126 3 0.00011 0.058 [1] Uwe Conrath. Two Inducers of Plant Defense Responses, 2,6-Dichloroisonicotinic Acid and Salicylic Acid, Inhibit Catalase Activity in Tobacco. Concentration and absorbency of treatment reMay 1995. URL: https : / / www . pnas . org / action solutions as measured after three-minute content/pnas/92/16/7143.full.pdf. trial: [H2 O2 ] with [2] J Durner and D F Klessig. Salicylic Acid Is a ModTime(min) A500 acid ulator of Tobacco and Mammalian Catalases. Nov. Blank 0.0000114 0.006 1996. URL: https://pubmed.ncbi.nlm.nih. 0 0.00164 0.866 gov/8910477/. 0.5 0.00137 0.72 1 0.00152 0.8 1.5 0.000736 0.388 2 0.00088 0.464 2.5 0.000364 0.192 3 0.000228 0.12
