Test for macromolecules lab report

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Abstract This lab was done to test for macromolecules consisting of carbohydrates, lipids, proteins, and nucleic acids by using specific reagents to test for each. The result would bring out a specific color change in the macromolecule. A color change would verify the sample positive for that macromolecule.

An educated guess was made that glucose and sucrose held simple sugars and starch did not. The results concluded this. For starch, iodine was used as a reagent.

The hypothesis was that color would change blue-black on the starch sample and not on the sugar samples. Also, tested was an onion and potato. The hypothesis was that the potato contained starch and the onion did not.

The results of this were also conclusive.

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For proteins, Ninhydrin and biuret was used as the reagent. Ninhydrin tested for both amino acids and protein. Biuret tests for protein only. For this experiment the only hypothesis was that the starch sample would more than likely not change color. The results included color changes with Ninhydrin solution on the Amino acid sample and the Albumin sample.

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Also the color changed for the Albumin sample when tested with Biuret reagent. For lipids, Sudan III was the reagent used. 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. Another test was done for lipids by rubbing substances on an unglazed paper. The oil, lard, and margarine were expected to leave a translucent spot and they did. Introduction Macromolecules are in all forms of life.

These organic compounds are carbohydrates, lipids, proteins, and nucleic acids.

These are monomers and they link together into long chains that form polymers. Different reagents can be used to find the presence of these macromolecules. Carbohydrates contain carbon, hydrogen, and oxygen. They offer energy and also provide cell support in plant cells.

There are three classifications for Carbohydrates: Monosaccharides are the simple sugars. Two monosaccharides make a disaccharide. Three or more monosaccharides are a polysaccharide. Glucose, fructose, and galactose are monosaccharides. Sucrose, lactose, and maltose are disaccharides.

Starch and glycogen are polysaccharides.Macromolecules Lab Report Leena Bhamrah Title: The effect of chemical tests on macromolecules Introduction: Background: Macromolecules are smaller subunits of different molecules with covalent bonds. These bonds are polar. Specific organic compounds that are contained in living organisms are proteins, lipids, carbohydrates .

Osmosis Lab Report by Evan Gerber Claire Cambron First Lab Report Wednesday am February 20, Theresa Gburek Abstract The major objective of the experiment was to test the effect of the concentration gradient on the diffusion rate. Speaking of model organisms including mice, Xenopus and zebrafish, would a total T4/T3 test be a better indicator for hypothyroidism over free T4/T3?

Also, out of T4 and T3, which would be a. Macromolecules.

Overview Most organic compounds in living organisms are carbohydrates, proteins, lipids, or nucleic acids. Each of these macromolecules is made of smaller subunits held together by covalent bonds. The purpose of this lab is to use chemical tests to identify known and unknown solutions of macromolecules.

Objectives. At the completion of this laboratory. Play a game of Kahoot! here. Kahoot! is a free game-based learning platform that makes it fun to learn – any subject, in any language, on any device, for all ages!

IntroductionPlastics are man made long chain polymeric molecules (Scott, ).More than half a century ago synthetic polymers started to substitute natural materials in almost every area and nowadays plastics have become an indispensable part of our life.