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.
The second number, called diastolic blood pressure, is the pressure when your heart fills with blood. The safest range, often called normal blood pressure, is a systolic blood pressure of less than 120 and a diastolic blood pressure of less than 80. This is stated as 120/80.he second number, called diastolic blood pressure, is the pressure when your heart fills with blood. The safest range, often called normal blood pressure, is a systolic blood pressure of less than 120 and a diastolic blood pressure of less than 80. This is stated as 120/80.