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 when your blood pressure is 120/80 mmHg or lower most of the time. 2  High blood pressure (hypertension) is when your blood pressure is 140/90 mmHg most of the time.  If your blood pressure numbers fall between 120/80 and 140/90, it is called pre-hypertension.