Which one of the following statement is true ........

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Which one of the following statement is true:

Blood pressure in our body is greater than the atmospheric pressure.

Haemoglobin provides a immunity against certain diseases.

DNA is better for the transmission of genetic information as compared to RNA.

None of the above.

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Explanation:

Blood pressure is the pressure of circulating blood on the walls of blood vessels. Most of this pressure is due to work done by the heart by pumping blood through the circulatory system. Used without further specification, "blood pressure" usually refers to the pressure in large arteries of the systemic circulation. Blood pressure is usually expressed in terms of the systolic pressure over diastolic pressure and is measured in millimeters of mercury, above the surrounding atmospheric pressure.