Honors Honors Program in the School of Biological Sciences The Honors Program in the School of Biological Sciences provides an opportunity for outstanding majors in the School to pursue advanced work in independent research via participation in the Excellence in Biological Sciences Research Program and earn Honors in Biological Sciences upon graduation. Additionally, students must have a minimum overall 3.
Carbohydrates, Lipids, Proteins By the end of this lab, the student should be able to: Identify the functional groups for each of the biomolecules that react in the following biochemical tests: Describe the mechanism of reaction for: Interpret the results when presented with data for each of the biochemical tests.
Design experiments to identify biomolecules using biochemical tests. The groups reduce CuSO4, a component of Benedicts, resulting in a color change in the benedicts solution from a turquoise to a brick to rusty-brown color. Sudan is a red, non-polar, dye that forms hydrophobic interactions with the hydrocarbon chains of lipids.
Alternatively, the Brown Bag test can also be used to identify lipids due to the oily nature of hydrocarbon chains. Reducing sugars and starches Reducing Sugars Some sugars such as glucose are called reducing sugars because they are capable of transferring hydrogens electrons to other compounds, a process called reduction.
When reducing sugars are mixed with Benedicts reagent and heated, a reduction reaction causes the Benedicts reagent to change color.
The color varies from green to dark red brick or rusty-brown, depending on the amount of and type of sugar. The reactions are heated in a boiling water bath for 5 minutes.
Click on the image to view an enlargement. Press the "Back" button to return. Draw a large chart containing four equally divided columns and seven rows. In the first column, label rows with the appropriate samples below: Starches Iodine solution IKI reacts with starch to produce a dark purple or black color.
Iodine is not very soluble in water, therefore the iodine reagent is made by dissolving iodine in water in the presence of potassium iodide. This makes a linear triiodide ion complex which is soluble.
The triiodide ion slips into the coil of the starch causing an intense blue-black color. If you were to set up an Iodine test, you would perform the following: Use a wax marker to mark two test tubes 1 cm from the bottom. Be sure to stir the starch before filling your tube.
Add two drops of IKI solution to each tube and note any precipitation or color change.
Design a chart and record your predictions for the starch test for reaction tubes Include in your chart the following headings: The results of a positive and negative control have been included in reaction tubes 1 and 2, respectively, for your convenience. Positive control Below right: Is glucose a starch or reducing sugar?
Is rice a starchy food or reducing sugar?Biology L – General Biology Lab I Lab 4: Biological Molecules Introduction There are four major classes of organic compounds (macromolecules) which comprise the bulk of living matter: carbohydrates, proteins, lipids, and nucleic acids.
In the first part of this laboratory you will Lab04_Biological_Molecules. The Ellington Lab conducts research in synthetic biology, protein engineering, and DNA nanotechnology at the University of Texas at Austin. The HASPI Curriculum Resources are available free for use by educators.
All of the resources align with the Next Generation Science Standards (NGSS) and Common Core State Standards (CCSS). Once your statistical analyses are complete, you will need to summarize the data and results for presentation to your readers.
Lab Report: Biologically Important Molecules: Carbohydrates, Proteins, Lipids and Nucleic Acids5/5(2). Biomolecules Lab Report Jordan Griffin the foods in which we questioned of being the various bio molecules were basically dead on tbiomolecules,o what our data vetconnexx.com livings are made up of in which we were testing in this experiment Procedures: (cc) image by anemoneprojectors on Flickr -Lipids: Get a brown paper .