A buffer solution is one which resists changes in pH when small quantities of an acid or an alkali are added to it. Acidic buffer solutions. An acidic buffer solution is simply one which has a pH less than 7. Acidic buffer solutions are commonly made from a weak acid and one of its salts-often a sodium salt. A common example would be a mixture of ethanoic acid and sodium ethanoate in solution. In this case, if the solution contained equal molar concentrations of both the acid and the salt, it would have a pH of 4.76.
They are haploid cells, because  they have half the number of chromosomes as an organism. During  fertilization the diploid number is restored. Sperm are single  cells. 3 people found this useful.
Sperm cell. Definition. noun, plural: sperm cells. A mature male gamete or reproductive cell; spermatozoon. Supplement. A single sperm cell consists of a round or cylindrical nucleated cell, a short neck, and a thin motile tail.Its structure is vital to its mobility and function (i.e. sexual reproduction).The compacted nucleus contains half of the genetic information. It fuses with an ovum (the female gamete) to form a zygote.In mammals, the sex is determined by the sperm cell. If it bears Y chromosome, the resulting offspring is a male.If X chromosome, the offspring is a female.t fuses with an ovum (the female gamete) to form a zygote. In mammals, the sex is determined by the sperm cell. If it bears Y chromosome, the resulting offspring is a male. If X chromosome, the offspring is a female.