Basic Biology
The documents I attached include a lab report, worksheets, notes and one exam. My most memorable experiences in biology were in the lab. I got to test the effectiveness of lactase drops when exposed to solutions containing different pH or temperatures. My results indicated that the lactase enzyme had the optimal catalytic activity at temperatures similar to those found in the human stomach; however, the low pH in the stomach–ranging from 2 to 5– rendered the drops ineffective because the enzymes denatured significantly as the pH was lowered to 5 (WA-COMP-2009.SCI.1.1.6.L). The biology 181 exam one was about sexual reproduction and genetics, in which I filled out a pedigree to determine the probability of gene expression when a …show more content…
The first exam was on acids, their base pairs, and their dissociation constants, which are used in calculating the concentration changes from an acid to determine how much is neutralized after combining it with a base (WA-COMP-2009.SCI.1.1.3.C). The second exam was one of my favorites because I had to determine the enthalpy changes in reactions that account for heat gains or losses in systems. Moreover, I was fascinated by the fact that different substances have a characteristic heat capacity of their own; this means that the heat required to raise the temperature by one degree Celsius of one substance is different from that required of another substance (WA-COMP-2009.SCI.1.1.3.F). The third exam was about the properties of matter, including concepts such as the equilibrium vapor pressure of water in a sealed bottle, indicating that the rate of vaporization equals the rate of condensation. Also, this test required me to think about the physical characteristics of water as it is exposed to different temperatures and pressures that lead to its solid, liquid, and gas states …show more content…
I was able to observer the structures of molecules and the bond angles they make to reach equilibrium between repelling forces. The bond angles helped me identify the bent, linear, and tetrahedral structures of water, oxygen, and methane respectively (WA-COMP-2009.SCI.1.1.3.B). The chemical sleuthing lab was really interesting to me. I was able to observe the chemical reaction as I mixed various chemical; while keeping notes of the colors, precipitates, and fizzing. The best part of that lab was when I had to identify the same chemicals, unlabeled, by mixing them together and comparing their reactions to my qualitative data
The documents I attached include a lab report, worksheets, notes and one exam. My most memorable experiences in biology were in the lab. I got to test the effectiveness of lactase drops when exposed to solutions containing different pH or temperatures. My results indicated that the lactase enzyme had the optimal catalytic activity at temperatures similar to those found in the human stomach; however, the low pH in the stomach–ranging from 2 to 5– rendered the drops ineffective because the enzymes denatured significantly as the pH was lowered to 5 (WA-COMP-2009.SCI.1.1.6.L). The biology 181 exam one was about sexual reproduction and genetics, in which I filled out a pedigree to determine the probability of gene expression when a …show more content…
The first exam was on acids, their base pairs, and their dissociation constants, which are used in calculating the concentration changes from an acid to determine how much is neutralized after combining it with a base (WA-COMP-2009.SCI.1.1.3.C). The second exam was one of my favorites because I had to determine the enthalpy changes in reactions that account for heat gains or losses in systems. Moreover, I was fascinated by the fact that different substances have a characteristic heat capacity of their own; this means that the heat required to raise the temperature by one degree Celsius of one substance is different from that required of another substance (WA-COMP-2009.SCI.1.1.3.F). The third exam was about the properties of matter, including concepts such as the equilibrium vapor pressure of water in a sealed bottle, indicating that the rate of vaporization equals the rate of condensation. Also, this test required me to think about the physical characteristics of water as it is exposed to different temperatures and pressures that lead to its solid, liquid, and gas states …show more content…
I was able to observer the structures of molecules and the bond angles they make to reach equilibrium between repelling forces. The bond angles helped me identify the bent, linear, and tetrahedral structures of water, oxygen, and methane respectively (WA-COMP-2009.SCI.1.1.3.B). The chemical sleuthing lab was really interesting to me. I was able to observe the chemical reaction as I mixed various chemical; while keeping notes of the colors, precipitates, and fizzing. The best part of that lab was when I had to identify the same chemicals, unlabeled, by mixing them together and comparing their reactions to my qualitative data