dehydration synthesis reaction e ..

The converse of dehydration synthesis is . Dehydration synthesis, that is, builds up – at the expense of () – while breaks apart, liberating ().

, for example, is from and via an -requiring dehydration synthesis , and is converted back to in the course of a .

Dehydration synthesis reaction B) ..

2Ring ie Glucose Galactose Fructose Dehydration Synthesis Forms 2 linked from BIO 48 at West Valley
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Carbohydrates and Dehydration Synthesis Flashcards | …

Cells build carbohydrate polymers by using energy to form , the bonds between monosaccharides. A dehydration synthesis reaction forms a bond between carbon atoms in two monosaccharides, sandwiching an oxygen atom between them and releasing a water molecule. A disaccharide forms when two monomers are joined. Sucrose (table sugar) is made by joining two specific monomers, glucose and fructose. Different monosaccharide pairs produce many of the common disaccharide sugars we associate with food, including sucrose, maltose (malt sugar, two glucose monomers) and lactose (milk sugar, glucose and galactose monomers).

(also known as a condensation reaction or dehydration synthesis).

Carbohydrate chains are extended by additional dehydration synthesis reactions, adding one monomer at a time to a growing chain. Short chains called oligosaccharides are frequently attached to lipids and proteins. These carbohydrate “tags” support immune system functions, participate in cell communication, and help attach cells to extracellular surfaces and other cells.

This activity tests your ability to identify the reactants and products in carbohydrate synthesis and hydrolysis.
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and glucose combine by dehydration synthesis

Because the position of individual atoms within a sugar molecule varies, many monosaccharides are of one another. For example, glucose and fructose share the molecular formula C6H12O6, but are structurally different. Differences between isomers are not always as readily apparent as in structural isomers like glucose and fructose. More subtle share the same order of covalent bonds between atoms, but differ in the three-dimensional positions of the atoms around one or more individual carbon atoms. For example, glucose and galactose are stereoisomers, and appear very similar in drawings. Small details such as whether an – OH extends from the right or left side of each carbon atom are extremely important to taste, chemical reactivity, and human health.

Lactose plays a major role in milk synthesis

Amino acids bond together to form disaccharides (chains of 2amino acids) and polysaccharides (chains of many amino acids).They also bond using dehydration synthesisbecause they release a water molecule in the process, and polysaccharides canbe broken into individual amino acids by adding water in hydrolysis.

in a reaction known as a dehydration synthesis ..

is not as sweet as other disaccharides such as sucrose (a glucose-glucose sugar), or the monosaccharides fructose or glucose. Lactose is cleaved to glucose and galactose in the intestine of the neonate by an enzyme activity called lactase (or ß-galactosidase). The galactose is then converted to another glucose by a different enzyme. Lactose is a major, readily digestible source of glucose which provides energy for the neonate. Lactose intolerance can occur in adult animals or animals who do not have lactase activity in their intestines. Aspects of lactose in milk will be discussed further in the Lactose Synthesis Lesson.

glucose and galactose, whereas the disaccharide sucrose ..

Polysaccharides, the “complex carbohydrates,” play vital energy storage and structural roles in living organisms, making carbohydrates the most abundant biomolecules on Earth. Polysaccharides are excellent energy storage molecules because they are easily built and broken down by enzymes. Forming fairly compact structures, polysaccharides allow energy storage without the space required by a pool of free glucose monomers. Other polysaccharides form strong fibers that provide protection and structural support in both plants and animals.