<span>R group (or side chain) is an organic component of amino acids that is unique to each amino acid. </span> <span>Three of the amino acids have basic side chains at neutral pH: arginine (Arg), lysine (Lys), and histidine (His). Their side chains contain nitrogen and resemble ammonia, which is a base and their pKa's are high enough that they tend to bind protons, (positive charge). Aspartic acid or aspartate (Asp) and glutamic acid or glutamate (Glu) are acidic amino acids because their side chains have carboxylic acid groups whose pKa's are low enough to lose protons, (negatively charged). The non-polar amino acids contain uncharged functional groups<span> at physiological pH and are incapable of participating in hydrogen bonding. </span></span>
The moon has phases because of where the sun shines on it. Only yhe part wiyh light of the moon is visible. As the moon moves, the sun light hits is at different angles and creates the different shapes we call phases.
In genetics, gene expression is the most fundamental level at which the genotype gives rise to the phenotype, i.e. observable trait. ... Such phenotypes are often expressed by the synthesis of proteins that control the organism's structure and development, or that act as enzymes catalyzing specific metabolic pathways.
the specific gravity of
pure sulfuric acid is---------> approximately 1.835 g / cm3
the specific gravity of
water is -------------------- >1.000 g / cm3.
The electrolyte, that
is, the dissolution of sulfuric acid in water, is usually at a rate of 36%
acid, so that, in a fully charged element, we can deduce the electrolyte
density, is 1.295 g / cm3. (see attached table)
The specific gravity is
actually the difference in the weight of water compared to a specific fluid. It
is measured with a hydrometer
