High levels of acid in blood are toxic to cells. Acidic blood or acidosis is toxic to your cells and can reduce their abilities to function properly. When your cells are impaired, they have a hard time fighting bacterias and virus. In addition, they carry less oxygen and cannot effectively utilize nutrients.
Fertilization of the egg by the sperm restores the diploid number of 46 chromosomes. We have 46 chromosomes that, if you lined them up by size and shape (karyotyped them), are actually 23 pairs of chromosomes - one was originally from mom and the other from dear 'ol dad.
Once cell division is triggered, the DNA inside the nucleus duplicates and the chromatin within the cells nucleus begins to condense. Prior to prophase, DNA is visible under a light microscope as a dark blur. Before prophase, a normal cell contains 23 pairs of chromosomes. After prophase, the cell contains 46 pairs of chromosomes -- two copies of each pair -- known as sister chromatids, joined at a centromere to form an X-shape.