How are bonds between A-T and G-C different?
It is the hydrogen wich bonds between AT and GC
the difference is in the number AT have 2 hydrogen bonds
GC have 3 hydrogen bonds
when 2 surface come into contact with each other, molecular bonds form between them. The force it takes to overcome friction is the force it takes to break those bonds. Different substances form different bonds and different numbers of bonds so the force of friction is different between different types of surfaces
The sugar-phosphate "backbone" of DNA is held together by covalent bonds. The strands of DNA are joined by hydrogen bonds (H-bonds) between the nitrogenous bases on either side. Adenine is joined to Thymine by 2 H-bonds. Cytosine is joined to Guanine by 3 H-bonds. This means that C and G are bound slightly more strongly than A and T (which is why the GC content of a certain piece of DNA can be important). Having…
What is the difference between interchain and intrachain hydrogen bonds in the secondary structure of proteins?
If you mean the bonds as in the bonds between particles at different states of matter. Then the temperature actually effect whether the bonds break or not, if the bonds in matter break the state of matter changes to a gas, whose particles are free moving and are completely unattached. Different liquids change to gas at different temperatures. Hope this helped :)
What is the difference between a substance composed of a mixture of different atoms and a compound composed of molecules?
DNA duplex strands are bonded by hydrogen bonds. On heating the hydrogen bonds break. At specific temperature called Tm half of the double helix is broken down (separated from each other) while the other half remains as such. This temperature can be determined , also the GC bond is stronger than AT so in such cases the temperature is more if the helix has more GC bonds.
Different bonds involve different interactions between atoms or molecules. Covalent Bonds: electrons are shared between two atoms, holding them together. Ionic Bonds: electrons are transferred (either donated or accepted) between two atoms, holding them together. Hydrogen Bonds: the partially negative part of a polar molecule is attracted to the partially positive part of another polar molecule.
The bonds between the bases of the two strands of DNA are hydrogen bonds (H-bonds). These are weaker bonds than the covalent bonds of the sugar-phosphate backbone. This means that when heat is applied, the H-bonds between the strand are broken and they separate. But the individual strands remain intact because of the backbone. Different segments of DNA will separate at different temperatures mostly because of the different G-C contents of the segment. There are…
Metallic bonds are bonds between metals. They consist of valence electrons in delocalized bonds covering the whole crystal. These electrons can move freely and are responsible for the special properties of metals such as electrical conductivity. Covalent bonds are electrons being shared and are usually between non-metals. They are localized to the atoms which are sharing them, resulting in individual molecules.
In metals the contituent particles are metals atoms , the intermolecular forces between these molecules are called metallic bonds. In these types of solids, the constituents particles are atoms of same or different elements bonded together by covalent bonds making a network solids. The interparticle forces oparting in these solids are covalent bonds