Prokaryotes are cells without a distinct nucleus.They have genetic material but that material is not enclosed within a membrane. Prokaryotes include bacteria and cyanophytes. The genetic material is a single circular DNA strand and is located within the cytoplasm.
Healthcare providers consider a normal blood pressure reading to be 120/80 or below. However, normal blood pressure can actually fall anywhere in a range from 90/60 to 120/80 -- it's not just one set number. The top number of the blood pressure reading is called the systolic pressure.
1 Normal blood pressure is below 120/80 mm Hg. 2  Prehypertension blood pressure (120 to 139 systolic or 80 to 89 diastolic) indicates an increased risk for developing high blood pressure. 3  High blood pressure (hypertension) is greater than or equal to 140 mm Hg (systolic) or greater than or equal to 90 mm Hg (diastolic).