Biochemistry: Workshop Flashcards
a chemical reaction with a positive enthalpy change may occur spontaneously when
coupled to a bigger reaction with a negative enthalpy change
a chemical reaction with a large and negative free energy change
is likely to be irreversible in the cell
hydrolysis of ATP is a strong
exergonic reaction
if a reaction has a large negative free energy change its likely to happen to a _ extent with _ amounts of product formed
large
at Keq the change in free energy of a reaction is
zero
a polar molecule is
a molecule with opposite charges at opposite ends
amino acids are classified according to
their strictures and properties of side chains
hydrophobic means
no net charge - non-polar
peptide bonds are (non/planar)
planar
peptide bond formation is a _ reactions
hydrolysis
what two groups of two amino acids form a peptide bond
an amino group and hydroxyl group
what type of bonding is responsible for the secondary structures of proteins
H bonding between C=O and N-H groups of peptide bonds
what is quaternary structure
spatial arrangement of 2+ polypeptide subunits into a single functioning complex
what is a protein domain
discrete region of polypeptide chain that has folded into a self-contained 3D structure
new nucleotides are added to the _ end of growing nucleic acids
3’
