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.
Normal blood pressure range is a systolic number less than 120 and diastolic reading of less than 80. Systolic, which is the top number, measures pressure in the arteries during heart beats. Diastolic, the lower number, measures the pressure in the arteries between heartbeats.