The symptom and sign which indicate placenta previa here is Pinless vaginal bleeding. Placenta previa is a condition where the placenta is covering the cervix or it is attached close to the cervix. In various times of pregnancy, bleeding may occur. It can not be a serious complication. The cause of the bleeding may depend on the amount of pain or the time of bleeding in pregnancy. In the first trimester, bleeding may occur and may be due to ectopic pregnancy, miscarriage, implantation of the placenta in the uterus or infection. Bleeding in late pregnancy lets say twenty weeks can be due to placenta previa or placental abruption.
Because the energy to drive ATP synthesis in mitochondria ultimately derives from the oxidative breakdown of food molecules, the phosphorylation of ADP to form ATP that is driven by electron transport in the mitochondrion
