Intro to BIOCH Flashcards
what kind of linkage is this?
phospoanhydride linkage
what kind of linkage is this?
phosphoester
what is the difference between phospoester and phosphoanhydride bond?
what bond links amino acids to form proteins?
peptide bonds
what bond links nucleotides to form nucleic acids?
phosphodiester bonds
what bond links monosaccharides to form polysaccharides?
glycosidic bond
what functional group is this?
phosphoryl group
are hydrogen bonds covalent or non-covalent?
they are non-covalent bonds where a hydrogen is shared between 2 electronegative atoms
The bond between the O and H or the N and H in the H bond donating group is a polar covalent bond. The polarity of that bond is what allows H bonds to happen (electrons are drawn away from H towards the more electronegative O or N, giving H a partially positive charge). The electrostatic attraction between the partially positive H, and an adjacent partially negative H bond accepting atom (such as oxygen), is what constitutes as a hydrogen bond, and it is non-covalent.
are hydrogen bonds stronger than covalent bonds?
no they are weaker
what atom in a hydrogen bond is covalently attatched to the hydrogen?
the donor
-the acceptor is a second EN atom with a lone pair
what non-covalent electrostatic forces are of importance? whats the last interaction?
ELECTROSTATIC: ionic interactions, H-bonds and van der waals (dipole-dipole and london dispersion)
and Hydrophobic effects
what are dipole-dipole interactions?
a type of van der waal interaction between polar non-charged groups
-weaker than H-bonds
what are london dispersion forces?
a type of van der waal interaction between nonpolar molecules
-weaker than dipole-dipole
what is the strength of each molecular interaction relative to each other?
covalent bond > ionoic interactions > H-bonds > van der waals
what is the relationship between number of potential H-bonds and solubility?
as the number of potential H-bonds increases, solubilioty of a molecule will increase
