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Covalent bonds

Covalent bond

a bond between two or more atoms that is provided by electrons that travel between the atoms nuclei, holding them together but keeping them a stable distance apart. the shapes of the covalent bonds change according to the electronegativity of the elements within the bond

2 or more atoms share one or more pairs of valence electrons

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Enzymes and activation energy.

... weaken intermolecular forces within the substrate and thus weaken their bonds so the reaction takes place much quicker. As you see otherwise it would ... to occur as a reaction requires the breaking of bonds (sometimes covalent) within a compound. Goodluck

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by prokaryotics
Sat Jul 11, 2009 9:09 am
 
Forum: Molecular Biology
Topic: Enzymes and activation energy.
Replies: 4
Views: 385

ATP hydrolysis releases energy, but what kind of energy?

... last link is definitely not worthy of your time. Just for information covalent and ionic bonds are both found in both organic and inorganic chemistry. With such a start, I do not think ...

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by canalon
Fri May 22, 2009 2:07 am
 
Forum: Molecular Biology
Topic: ATP hydrolysis releases energy, but what kind of energy?
Replies: 5
Views: 1075

Re: Has anyone used the ChemSketch program to build molecules?

... looking for a response to this post, Chemsketch automatically creates covalent bonds between elements. If you want to make hydroxide, make water by clicking on oxygen. Then ...

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by dancallaghan
Thu Apr 30, 2009 9:36 am
 
Forum: Molecular Biology
Topic: Has anyone used the ChemSketch program to build molecules?
Replies: 4
Views: 582

Re: Denaturation of enzymes

... to the stability of individual molecules and individual sections, that bonds reform in a different order than when the protein was first created? Say, for example, you have the covalent bonds (along the entire primary structure) that form first, followed by disulphide ...

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by carmenh
Fri Feb 27, 2009 10:21 pm
 
Forum: General Discussion
Topic: Denaturation of enzymes
Replies: 3
Views: 17137

Re: When do mutations occur?

... occur when the UV photon hits the bases and causes a rearrangement of covalent bonds (e.g. thimine dimerization)? The effect on transcription comes later, after the UV interaction, ...

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by jonmoulton
Wed Nov 05, 2008 5:43 pm
 
Forum: Molecular Biology
Topic: When do mutations occur?
Replies: 17
Views: 2737
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