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.
Answer:
stomach, pancreas and small intestine
Uracil is not found in DNA, only RNA, and replaces thymine in RNA
the answer to this question is solar system, earth is a singular planet, galaxy contains stars but does dot orbit around a central star, and the sun is a star
When there is no movement of solvent in solution then both are in isotonic soln !!
so They are in ISOTONIC solution !!