You may have heard of DNA described the same way. DNA is just one type of nucleic acid. All of these "NAs" work together to help cells replicate and build proteins.
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.
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. 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.Bioinformatics community open to all people. Strong emphasis on open access to biological information as well as Free and Open Source software.
biology courses bio fundamentals of biology i: introduction to cellular biology (4 s.h.). BIO10 Lab 3 Enzymes and pH 30 Experiment 1: RENNIN and TEMPERATURE Rennin is an enzyme found in the stomach lining of mammals. Rennin curdles .
Feb 02, · A demonstration preview of the traditional macromolecule lab for basic biology. May 13, · The macromolecule lab taught us how to set up a comparison to determine what a positive and negative test for a macromolecule looked like.
Afterwards we used our positively tested samples as comparisons to determine whether or not the unknown food items that were brought in were positive for any of the four macromolecules.
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, you should be able to.