Final answer:
The statement about the combining form for albumin is true, and albumin is the most abundant plasma protein. The buffy coat contains white blood cells, not proteins. The D antigen is part of the Rh, not ABO system, and sensitization from a first pregnancy can cause hemolytic disease of the newborn in subsequent pregnancies.
Step-by-step explanation:
The statement that the combing form for albumin is albumin/o is true. Albumin is indeed the most abundant plasma protein and plays a crucial role in maintaining the oncotic pressure of the blood, which helps to keep the fluid from leaking out of the blood vessels into the tissues. However, the buffy coat is not made up of proteins but is actually a thin layer in a blood sample that contains leukocytes and platelets that appears between the red blood cells and plasma when the blood is centrifuged. The D antigen is not part of the ABO blood group system; it is associated with the Rh blood group system. Hemolytic disease of the newborn is more likely to occur in a second pregnancy than in the first because the mother's immune system has already been sensitized to the Rh-positive red blood cells of the fetus after the first pregnancy, leading to an immune response against the fetus' cells in subsequent pregnancies.