Biology Lab Essay

The protein molecules in many foods provide the amino acid building blocks required by our own cells to produce new proteins. To determine whether a sample contains protein, a reagent called Biuret solution is used. Biuret solution contains copper ions. However, the chemical state of the copper ions in Biuret solution causes them to form a chemical complex with the peptide bonds between amino acids (when present), changing the color of the solution. Biuret solution is normally blue, but changes to pink when short peptides are present and to violet when long polypeptides are present.

Please answer these questions then place them in the drop box for this lab. Use Microsoft word if possible.

The purpose of the lab was to determine the ratio of air to acetylene results in complete combustion of acetylene gas. The balanced chemical equation for this experiment was C2H2(g) + O2(g) --> CO2(g)+ H2O(l). Complete combustion is the reaction of an element or compound with oxygen to produce the most common oxides and energy. Complete combustion occurs when the fuel and oxygen combine in exact proportions to completely burn the fuel, which leaves a clean test tube. Incomplete combustion is the reaction of an element or compound with oxygen to produce some oxides with less oxygen than the most common oxides. Incomplete combustion occurs when there is not enough oxygen to react

3. Experiment: Use the Gizmo to find the carrying capacity with Ample, Moderate, and Little land. List the carrying capacities below.

What observations can you make regarding the gene pool and gene frequency of the surviving individuals?

3a. Body more than five times as long as broad; front edge of dorsal fin far

a. Change the 24th bead to a different color. What does the sentence say now (re-read the entire sentence)? Does the sentence still make sense?

3. State the name and structure of the functional group for each type of biologically

1. Describe the function of the following pieces of safety equipment and how each might be used: (10 points)

Cellular respiration: C6H12O6  +  6O2 →  6CO2  +  6 H2O  +  36 or 38 ATP

Submit your document in a Word (.doc or .docx) or Rich Text Format (.rtf) for best compatibility.

groups. It was conducted to further the research in choice overload and paralysis of the mind.

Table 1 Concentration of protein, DNA, and ratio of the two in heart, kidney and liver of bos taurus. Average standard deviation of protein concentration is also shown.

Hydrolysis of starch for fungal amylase Aspergillus Oryzae and bacterial amylase Bacillus Licheniformis at different temperatures.

The first day we started using microscopes and getting used to them. We expected to not see much only because we didn’t know what to look for and also we were not used to the microscopes quite yet. The second day of lab it was pretty neat how the nucleus was visible because it was dyed darker than the other parts of the cell. As in the intro you can tell what was the nucleus and what wasn't because there were some cells darker than the others. The third day everyone looked at onions/plant and fish cells through the microscope. We were all more experienced more and we knew exactly what we were looking for. As we did the class average it was neat how many of our percentages were close together. It took a while to find a bunch of cells in a group but we ended up being very successful. It was cool seeing interphase, prophase, etc in person. They looked a lot different in person than on the power points. That’s what made it a little difficult but we just had to keep zooming in, focusing in, an just staring really carefully to tell which was which