Lab Report 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.

On the Monday of May 23rd, the group were asked to turn the mink over to do a cut from the neck to mid back and skinned it. After skinning the mink, classes were required to names the muscles. Wednesday of May 25th, groups were required to take out the esophagus, stomach, small intestine, and big intestine from the mink and measured it. To make the lab easier, groups were suggested to take the liver. Slowly through the lab, students took the digestive system out to study and named as well as know the functions to them. The functions are similar to human function of digestive

When the pH is not at its optimum, the differing pH's will disrupt the bonding between the R groups of the amino acid causing its structure and the shape of the activation site to change

A1.Work under the hood! With a pair of tongs, hold a strip of magnesium in a bunsen burner flame. Do not look directly at the flame. Save the ash in a small beaker for the next procedure. If magnesium is substance "A" in the general equation, what is "B"?

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.

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

The number of electrons forming a charge cloud around the nucleus is (pick one of the following) greater than; equal to; smaller than the number of protons in the nucleus of the atom.

Develop a hypothesis relating to the amount of dissolved oxygen measured in the water sample and the number of fish observed in the body of water.

What is Authorization and how is this concept aligned with Identification and Authentication? Authorization is a set of rights defined for a subject and an object; this concept is aligned with Identification and Authentication because these are the 3 steps to the access control process

The large intestine was once thought to have no function, but now it is said to have a role in immunity. The tongue mixes food in the mouth and holds it between the teeth. For the dissection we needed the kidneys and the bladder. The kidneys and bladder are both located in the urinary system. The function of the kidney is to remove metabolic waste from the blood.

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

Consist of oral cavity, esophagus, gallbladder, liver, stomach, duodenum, pancreas, colon, cecum, appendix, jejunum, and rectum.

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

This experiment was performed to observe differences in density based on the chemical makeup of an object. Pennies minted before 1982, pennies minted after 1982, and an unknown metal sample was tested to see if there were any differences in their densities. Ten pennies from each category and the metal sample were weighed using a scale to find mass and the displacement method was used to find their volumes. The masses and volumes were then used to calculate the densities of the pennies (D=m/v). The density of the pre-1982 pennies were 8.6 g/mL while the post-1982 pennies were 6.9 g/mL. The metal sample’s density was 1.7 g/mL. Following the experiment we were given the real densities of each item to calculate the percent error with the formula

(4) Moreover, after the completion of the two activities mentioned above (whole class and small-groups), I explain that throughout the school year, students will be completing different labs and will be required to submit a lab report if they want to receive credit for participating. At this point, we complete a short density lab and though students work together, they must write their report independently. Since this lab report is the first one they will submit for a grade, I usually provide lots of feedback and am lenient with the grade, deducting very few points for errors. However, as the year progresses and the labs increase in complexity, my expectations for student reports also increase significantly, because I expect my students to improve and begin mastering this skill. Towards mid-year, I begin deducting more points for once-insignificant mistakes.