Oxygen and glucose are need for cellular respiration
I don't know Number 3 so i can't answer.
4. (B) Pulmonary arteries the only artery in the choices that deliver deoxygenated blood.
5. (D) Immunoglobulins are proteins found in blood plasma.
6. (C) Diastolic pressure. I think you meant "relaxes" not "relates"
7. I think the answer is (A) Enzymes. Hormones can also be an answer i think.
If the concentration of sodium outside the cell is more than inside , so to take out the sodium , ATP is used as the cells has to work against concentration gradient !
You can see this in Neurons as a example ! There is sodium pump to throw sodium out of cell !!