The two factors of primary importance affecting water density are temperature and salinity. These are an important influence on global ocean currents. The process of conve â¦ rgence and divergence also plays an important role on controlling the water density of Oceans. In addition, the density of water increases slightly with increasing pressure and this can become a factor at the tremendous pressure of the deep ocean.
Examples of these biosynthetic pathways include the production of lipid membrane components and nucleotides. The prerequisite elements for biosynthesis include: precursor compounds, chemical energy (e.g. ATP), and catalytic enzymes which may require coenzymes (e.g. NADH, NADPH). These elements create monomers, the building blocks for macromolecules.
In the Lock and Key Model, the substrate and the enzyme's active site are exact matches for each other, similar to puzzle pieces fitting together. Only a single substrate is the 'key' that matches the 'lock' of the active site. Once the enzyme locates the molecule that fits it exactly, the chemical reaction begins.n the Lock and Key Model, the substrate and the enzyme's active site are exact matches for each other, similar to puzzle pieces fitting together. Only a single substrate is the 'key' that matches the 'lock' of the active site. Once the enzyme locates the molecule that fits it exactly, the chemical reaction begins.