In the electron transport chain, electrons move through the cytochromes in the following order: b566, b562, c1, c, a, and a3 (see Figure 16-19). The various cytochromes have slightly different heme groups and axial ligands, which generate different environments for the Fe ion (Figure 16-21).
On average, a woman has her period from three to seven days and the average woman menstruates from age 13 until age 51. That means the average woman endures some 456 total periods over 38 years, or roughly 2,280 days with her period -- 6.25 years of her life. Midol. You can only take up to six caplets a day, and cramps usually persist for two days. There are 40 caplets per package of Midol, which costs $8.99 at Walgreens.
Menstrual cycles take place over about one month (around 21 to 34 days), but each womanâs cycle is different. Many women have a cycle that lasts 28 days. The cycle includes not just your period, but the rise and fall of hormones and other body changes that take place over the month.eriods usually last between three and five days. It is normal to have periods that are shorter or longer, up to seven days. It is also normal if your periods are not the same number of days each month, especially in the first years.