Under certain conditions the side chains ( R- groups) of asparitic acid and lysine can form an ionic bond with one another the pKa for ionizing groups on these side chains is 3.86 for aparitic acid and 10.53 for lysine A) draw the dominante structure of each of these amino […]

The Healthy People program (see the status report on healthy lifestyle habits, Table 1-6) has greatly reduced its goals from the previous targets, especially regarding normal and overweight individuals. For instance, the 2010 goal for the segment of the population at a healthful weight was 60%, while the 2020 goal is 34%; […]

Q1. A typical prokaryotic cell has about 3,000 genes in its DNA, even as a human cell has about 25,000 genes. About 1,000 of these genes are present in both types of cells. Based on the understanding of evolution, describe how such different organisms might have this same subset of […]

The mutated form of hemoglobin (hemoglobin S, or HbS) in sickle-cell anemiaresults from the replacement of a glutamate residue by a valine residue at position 6 in the chain of the protein. (Normal hemoglobin is HbA.)   HbS has normal shape under normal conditions, but under conditions of low [O2] the hemoglobin forms […]