 |
Business | Industries | Finance | Tax |
| Index: > A B C D E F G H I J K L M N O P Q R S T U V W X Y Z |
|
|||||
| First Prev [ 1 2 ] Next Last |
A Haworth projection representation of the structure of glucose (α-D-glucopyranose)
Glucose ( C6 H12 O6, molecular weight 180.18) is a hexose -- a monosaccharide containing six carbon atoms. Glucose is an aldehyde (contains a -CHO group). Five of the carbons plus an oxygen atom form a loop called a "pyranose ring", the most stable form for six-carbon aldoseAn aldose is a sugar containing one aldehyde group per molecule and has the chemical formula CHO. Fischer projection of D- glyceraldehyde With only 3 carbon atoms, glyceraldehyde is the simplest of all aldoses. List of aldoses triose: glyceraldehyde tetros. In this ring, each carbon is linked to hydroxyl and hydrogen side groups with the exception of the fifth atom, which links to a 6th carbon atom outside the ring, forming a CH2OH group. This ring structure exists in equilibrium with a more reactive acyclic form, which makes up 0.0026% at pHAlternate uses: see Ph pH (potential (of) hydrogen) is a measure of the concentration of hydrogen ions (H+) in a solution and, therefore, its acidity or alkalinity. The concept was introduced by S. Sorensen in 1909. The p stands for the German potenz mean 7.
Glucose is a ubiquitous fuel in biologyBiology studies the variety of life clockwise from top-left E. coli tree fern, gazelle, Goliath beetle Biology is the science of life. It is concerned with the characteristics and behaviors of organisms, how species and individuals come into existence, an. We can speculate on the reasons why glucose, and not another monosaccharide such as fructoseStructure formula of fructose Fructose or levulose, is the form of sugar found in fruit and honey. It is a laevorotatory monosaccharide with the same empirical formula as glucose but with a different structure. Although fructose is a hexose (6 carbon atom, is so widely used. Glucose can form from formaldehydeProperties General Name Formaldehyde The center of this image represents a carbon atom. Chemical formula H C O Formula weight 30. 03 amu Synonyms methanal methyl aldehyde, methylene oxide CAS number 50-00-0 Phase behavior Melting point 156. 9 °C) Boiling under abioticAbiotic factors are non-living factors which affect the ability of living organisms to survive in an environment. These can include both physical and chemical factors. Some examples of physical abiotic factors are soil, rocks, weather, and the availabilit conditions, so it may well have been available to primitive biochemical systems. Probably more important to advanced life is the low tendency of glucose, by comparison to other hexose sugars, to nonspecifically react with the amino groups of proteins. This reaction ( glycosylation) reduces or destroys the function of many enzymes. The low rate of glycosylation is due to glucose's preference for the less reactive cyclic isomer. Nevertheless, many of the long-term complications of diabetes, blindness, kidney failure and peripheral neuropathy for example, are probably due to the glycosylation of proteins.
In respiration, through a series of enzyme-catalysed reactions, glucose is oxidized to eventually to form carbon dioxide and water, yielding energy, mostly in the form of ATP.
Chemically joined together, glucose and fructose form sucrose. Starch, cellulose, and glycogen are common glucose polymers ( polysaccharides).
The older name dextrose arose because a solution of D-glucose rotates polarised light towards the right. In the same vein D- fructose was called "levulose" because a solution of levulose rotates polarised light to the left.
| Politics | Business | Finance |
 |
 |
 |
|