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Useful definitions:
- Dextro: Right
- Laevo: Left
- Enantiomer: mirror form of a molecule
- Chiral: a molecule lacking an internal plane of symmetry that can be found in two non-superimposable mirror forms.
The mirror images of a chiral molecule are known as enantiomers, one will be designated Dextro (D-) and the other Laevo (L-).
This behaviour is exhibited by organic molecules containing an asymmetric Carbon atom e.g. D-Glucose, L-Cysteine, etc, enzymes are chiral and tend to selectively catalyse a single enantiomer.
Chiral molecules that are optically active will rotate plane polarised light passing through them, l- enantiomers will rotate the polarisation to the Left, d- enantiomers will rotate it to the Right.
Note the capitalisation L/D refers to the stereochemistry of the molecule relative to that of Glyceraldehyde - l/d tells you which way the polarisation will be rotated. The IUPAC discourages the use of l/d notation as it can be confusing +/- is prefered.
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Which sugar is called invert sugar?
when sucrose is hydrolysed it turns into glucose and fructose. fructose is laevo rotatory whereas glucose is dextrorotatory sucrose is also dextrorotatory but amout of laevo rotation of fructose is able to overcome the dextro rotation of glucose. hence the product is laevo rotatory an d reactant dextrorotatory hence sucrose is an invert sugar.
What type of amino acids are all proteins are composed of?
Amino acids are generally of two types depending on their configuration. viz. D- and L- which means dextro and laevo rotatory respectively. All proteins are made of L-amino acids
What prefix means towards the left?
Laevo is one in science that i've come across
Word with aev?
coaeval coaevals laevo mediaeval mediaevals naevi naevoid naevus
What is the meaning of levo and dextrorotatory?
This is to do with chemicals which are optically active, which means they rotate the plane of polarized light which is passed through them. Dextrorotatory means that the plane of polarization is rotated to the right, or clockwise, as observed when facing the oncoming light. Levo, or laevo-rotatory is the opposite, rotation to the left. Molecules which do this are mirror images of each other.
How does the presence of a chiral carbon atom in a molecule give rise to the existence of a pair of stereoisomers?
Chirality does not give rise to a a pair of stereo-isomers but to a pair of optical isomers.Optical isomers are identical in every way but one: that the two isomers are mirror images of each other...they are not superimposeable...they are defined as + and - or laevo and dextro rotatory (left handed and right handed) because of the effect they have on polarised light. Polarised light is oriented in one plane and passing such light through a laevo rotatory optical isomeric substance it will be rotated through an angle and emerge in a different plane.In living organisms a higher proportion of one optical isomer over the other occurs.Substances produced in the lab have more or less equal proportions of each isomer and are called racemic mixturesA chiral carbon atom is defined as having four differentconstituent atoms or groups of atoms attached to it by means of single covalent chemical bonds.This confers a status of assymetry to this carbon atom.
What are some five letter words with 2nd letter A and 3rd letter E and 5th letter O?
According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 1 words with the pattern -AE-O. That is, five letter words with 2nd letter A and 3rd letter E and 5th letter O. In alphabetical order, they are: laevo
What are some five letter words with 2nd letter A and 3rd letter E and 4th letter V?
According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 3 words with the pattern -AEV-. That is, five letter words with 2nd letter A and 3rd letter E and 4th letter V. In alphabetical order, they are: laevo naeve naevi
What are some five letter words with 3rd letter E and 4th letter V and 5th letter O?
According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 1 words with the pattern --EVO. That is, five letter words with 3rd letter E and 4th letter V and 5th letter O. In alphabetical order, they are: laevo
What are some five letter words with 1st letter L and 2nd letter A and 5th letter O?
According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 4 words with the pattern LA--O. That is, five letter words with 1st letter L and 2nd letter A and 5th letter O. In alphabetical order, they are: laevo largo lasso lazzo
What are some five letter words with 3rd letter E and 5th letter O?
According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 11 words with the pattern --E-O. That is, five letter words with 3rd letter E and 5th letter O. In alphabetical order, they are: aweto chemo credo flexo fuero grego keeno laevo piezo steno uredo
What are some five letter words with 2nd letter A and 3rd letter E and 4th letter V and 5th letter O?
According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 1 words with the pattern -AEVO. That is, five letter words with 2nd letter A and 3rd letter E and 4th letter V and 5th letter O. In alphabetical order, they are: laevo
