Lab 2 proteins and starches

After completing each test the results were recorded in the table as positive and negative to indicate if the substance contained the compound. Test for Starch Polysaccharide: The copper atom of the biuret solution reacts with the peptide bonds to cause the color change. Proteins Proteins are complex, specialized molecules composed of carbon, oxygen, hydrogen, nitrogen and sometimes sulfur.

Put a thin slice of potato on a slide and stain it with IKI. They are enzymes that control many things in the body, such as cell transport, hormone regulation, and much more. Also roaming the classroom, watching students perform their tests, and asking probing questions also will provide valuable information about their understanding of the subject.

Record your results in your notebook. Nucleic acids won't be explored in this lesson. The more fat it contains, the more particles the Sudan red will stain.

Proteins And Starches – A Bad Combination For Good Digestion

The contents of test tubes can be disposed down the drain. Five drops of Ninhydrin solution was added to each tube.

We gently rocked the test tubes back and forth, mixing the copper sulfate with the alkaline solution. All tubes were placed in boiling water for 3 minutes. Each tube was filled with 10 drops of distilled water, amino acid solution, albumin solution, and starch solution respectively.

The glucose present in the solution reacts with the copper sulfate in the Benedict reagent and makes copper oxide that is an orange to red-brick precipitate.

Proteins And Starches – A Bad Combination For Good Digestion

The hypothesis was that color would change with corn oil. The results concluded this and that egg white samples and honey did not contain lipids.

First, we obtained a test tube rack and 5 test tubes. The experiment started by cleaning the test tubes and labeling them 1 through 4. Lab 2: The Testing of Proteins and Starches in Various Solutions P URPOSE URPOSE The purpose of this lab is to test/see whether or not the various solutions involved have a negative or positive result for protein or starch.

Carbohydrates, Lipids, Proteins

Some starches provide your body with indigestible fiber, or roughage, which aids digestion. Proteins are organic compounds important for growth and repair. Lipids (e.g. fats) are organic compounds that can supply as much as four times the amount of energy as carbohydrates or proteins.4/4(9).

Testing for Lipids, Proteins and Carbohydrates

In unknown #2, starch and protein were present. Conclusion The purpose of this lab was to test various substances including fructose, sucrose, starch distilled water, glucose, and egg albumin for presence or absence of reducing sugars, starch, sugar, proteins, and lipids.

knowledge of the basic structure of each macromolecule to perform tests in the lab that detect the Because you are going to be testing for the presence of different macromolecules in this lab, there are Starch (tube 2) Proteins (tube 3) Table 4.

Carbohydrates, Lipids, Proteins

Determination of macromolecules present in. Proteins are complex, specialized molecules composed of carbon, oxygen, hydrogen, nitrogen and sometimes sulfur. The building blocks of proteins are amino acids. There are 20 different amino acids that combine to form polypeptides (proteins).

View Lab Report - lab2 protien and starches from BSCC - BSCC - at Florida State College at Jacksonville. 1/21/16 Lab2 - Proteins and Starches Purpose: The purpose of this lab is to further my.

Lab 2 proteins and starches
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Lab 2: Carbohydrates and Protein/Lipids | Spurthi's AP Biology Notebook