1.Lara is a medical student. She is in her on-the-job training at the hospital near her dormitory. One patie'nt is suffering from high blood pressure. Which element in the body is use to control blood pressure and blood volume? *
A. sodium
B. chlorine
C. potassium
D. phosphorus
2.Which of the following is an example of a non-metal?
A. iron
B. zinc
C. cobalt
D. carbon
3. Which of the following element is needed in the production of the body’s energy compound called adenosine triphospate or ATP? *
A. oxygen
B. potassium
C. phosphorus
D. aluminum
4.What is the most essential element needed by our body? *
A. carbon
B. oxygen
C. hydrogen
D. calcium
5.Which element plays a role in bone formation, blood clotting, and reducing inflammation? *
A. lead
B. carbon
C. chlorine
D. manganese