Galactose

to a shortage or an absence of the digestive enzyme lactase. Lactase is an enzyme located on the brush border of mucosal cells in the small intestine (Stanfield, 2011). Normally, lactose is hydrolyzed by this enzyme and end products, glucose and galactose, are readily absorbed into the bloodstream (Lomer, Parkes, & Sanderson, 2008). Without lactase this mechanism is not possible and lactose problematically lingers as a disaccharide in the small intestine’s lumen. This paper will discuss the development

TITLE : Reactions and separation of sugars by TLC. AIM : Thin-Layer Chromatography can show many different characteristics of a mixture. It is recognized for isolation , separation ,identification, and anaylsis of the mixture’s components. The purpose of this experiment is to separate carbohydrates into its pure components such as mixtures of monosacrides by TLC. TLC is used to identify sugars in normal and pancreatic disease urine, the procedure is easy and reproducible . INTRODUCTION: technique

What are regulatory-motifs? They are incredibly powerful strings of amino acids called promoters which help regulate whether an important gene function is turned on or off. There are thousands of motifs that have been discovered; however, understanding the specific function of a particular motif is difficult. When analyzing a DNA sequence, it is challenging to see where in the segment the motifs occur. Thanks to bioinformatics, algorithms have been developed to assist in finding motifs. A sequence

molecules. What is a molecule? A molecule is a group of atoms held together in a chemical bond by sharing electrons. They are the smallest part of a compound that can experience a chemical reaction. The three molecules that make up sugar are glucose, galactose and fructose. Fructose is the molecule that makes sugar sweet and any extras of that one molecule (fructose) can cause major diseases. When someone eats the sugar the molecules in it give you energy (http://www.chemistryviews.org/). When sugar is

Each one recognizes a unique sequence of 4-8 nucleotides in a DNA molecule and are cut at specific locations within the site. The cutting is done by the use of restriction endonucleases, also called enzymes. Hundreds of restriction enzymes have been identified. “A bacterium carrying such a plasmid is able to live and multiply in the presence of an antibiotic, while cells lacking the plasmid are unable to divide. Then, because bacteria divide rapidly, they can be used as factories to copy DNA fragments

group of lysine residues of proteins producing labile N-substituted glycosylamine (Schiff base) that may undergo two sequential rearrangements, forming a stable Amadori product (Fayle & Gerrard, 2002). The reducing sugars namely, glucose, fructose, galactose, mannose, ribose and certain carbohydrate relatives are inherently reactive toward nucleophilic groups. Glucose is the least reactive among common sugars because it exists in least concentration in the open chain form (Paulsen and Pflughaupt, 1980)

Lactase is an enzyme produced in the small intestines of mammalian infants (including humans) which breaks down the lactose in milk (and other dairy products) into glucose and galactose. After the weaning process in the early childhood of mammals and human infants the production of lactase decreases and thus the ability for them to digest lactose. The inability to digest lactose is called lactose intolerance it results in flatulence

Anatomy Basics 1.1) Levels of Structural Organization The levels of structural organization are like building blocks, you start with the simplest and add them together to build up to something more complex. Chemical: Atoms combined to form molecules Cellular: Cells are made up of many molecules put together Tissue: Tissues are made up of similar types of cells with common function Organ: Different types of tissue combine to perform different functions Organ Systems: Different organs working closely

The expression of lac operon in each tube equals the amount of beta-galactosidase produced. Therefore, by looking at the amount of beta-galactosidase under different conditions collectively is a good way to understand the function of inducers and repressors in supervising the expression of lac operon and the control of gene expression generally.Throughout this experiment, CTAB was used to kill the E. coli celles at specific time sets so that the cell lyses and releases its content. This is very important

yellow which was an example of a positive result. The stomach contents had the same color before and after the reaction which caused a negative result. This result hinted that the victim probably did not eat pizza from Milano because cheese contains galactose which is a monosaccharide. The next test was the Iodine Test (tested for polysaccharides) where