Usually, an enzyme molecule has only one active site, and the active site fits with one specific type of substrate. An active site contains a binding site that binds the substrate and orients it for catalysis. Residues in the binding site form hydrogen bonds, hydrophobic interactions, or temporary covalent interactions (van der Waals) with the substrate to make an enzyme-substrate complex.
The decreased volume only disrupts the equilibrium if the moles of gaseous products and moles of gaseous reactants are unequal. If there are an equal number of moles of gaseous substances on both sides of the arrow, the change in volume has an equal effect on the concentrations of reactants and of products.
A few examples include: Plate Tectonics â Density is a factor for â¦ Mantle Convection Behavior of Pollutants Density of Pollutants Affects Flow Sediments Flowing into the Ocean Factors Affecting Density Temperature As the temperature of most substances increases Atoms move faster and spread apart. Expansion increases the volume which decreases the density because the mass remains the same. Pressure Solids At great depths below Earthâs surface there is extremely high pressure from the overlying rocks. Minerals are compressed Volume decreases. Density increases Fluids (Particularly gases such as the atmosphere) As pressure decreases, gases expand. This results in an increase in volume. Density decreases Shape and Size If the temperature of a material remains constant, the size and shape will not affect itâs density. The mass and volume change proportionately. Phases of Matter For most substances particles are most closely packed in the solid phase.