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.
By contrast, each cell contains only a single set of nuclear DNA (46 chromosomes), which is made up of 3,000,000,000 base pairs. Whenever an egg cell is fertilized, nuclear chromosomes from a sperm cell enter the egg and, together with the egg's nuclear DNA, form the DNA for the new individual. The mtDNA from the sperm cell, on the other hand, is left behind, outside of the egg cell.