$$\text{Prothrombin} + \text{Prothrombinase} + Ca$$^{2+}$$ \rightarrow \text{Thrombin}$$

Question 1

Which of the following best explains why blood is more viscous than water?

Accepted Answer

Blood contains formed elements such as erythrocytes, leukocytes, and platelets.

Question 2

A patient presents with a hematocrit of 55%. Which of the following conditions is most likely?

Accepted Answer

Polycythemia

Question 3

Which plasma protein is primarily responsible for maintaining the osmotic pressure of blood?

Accepted Answer

Albumin

Question 4

A person with type O blood can safely donate to which of the following recipients?

Accepted Answer

Type A, B, AB, and O recipients

Question 5

Which of the following is TRUE regarding erythropoiesis?

Accepted Answer

It is regulated by erythropoietin released from the kidneys.

Question 6

A patient with a vitamin K deficiency is most likely to experience which of the following?

Accepted Answer

Impaired blood clotting due to reduced synthesis of clotting factors II, VII, IX, and X

Question 7

Which of the following equations correctly represents the conversion of prothrombin to thrombin during coagulation?

Accepted Answer

$$	ext{Prothrombin} + 	ext{Prothrombinase} + Ca$$^{2+}$$ ightarrow 	ext{Thrombin}$$

Question 8

A newborn is diagnosed with hemolytic disease of the newborn (erythroblastosis fetalis). Which scenario most likely led to this condition?

Accepted Answer

Mother is Rh- and fetus is Rh+

Question 9

Which of the following statements about hemoglobin is correct?

Accepted Answer

Hemoglobin consists of four polypeptide chains, each with a heme group.

Question 10

A patient with a platelet count of $$1.2 	imes 10$$^{5}$$ platelets/mm^3$ is most likely to have which condition?

Accepted Answer

Thrombocytopenia

Question 11

Which of the following is a function of neutrophils?

Accepted Answer

Phagocytosis of bacteria marked with antibodies or complement proteins

Question 12

Which of the following best describes the role of macrophages in the immune response?

Accepted Answer

They present antigens to T lymphocytes via class II MHC molecules.

Question 13

Which of the following is most likely to impair blood clotting?

Accepted Answer

Liver disease

Question 14

During the destruction of red blood cells, which molecule is converted to bilirubin before being excreted?

Accepted Answer

Biliverdin

Question 15

Which of the following is TRUE regarding the ABO blood group system?

Accepted Answer

Type O individuals lack both agglutinogen A and agglutinogen B.

Question 16

Which of the following best describes the sequence of events in primary hemostasis?

Accepted Answer

Vascular spasm followed by platelet plug formation

Question 17

A patient with pernicious anemia is most likely to have a deficiency in which of the following?

Accepted Answer

Vitamin B12

Question 18

Which of the following equations represents the conversion of fibrinogen to fibrin during the coagulation cascade?

Accepted Answer

$$	ext{Fibrinogen} + 	ext{Thrombin} ightarrow 	ext{Fibrin}$$

Question 19

Which of the following is a characteristic of sickle cell anemia?

Accepted Answer

It results in abnormal hemoglobin that causes RBCs to become sickle-shaped at low oxygen levels.

Question 20

Which of the following is TRUE regarding the Rh blood group system?

Accepted Answer

Rh-positive blood contains agglutinogen D.

Hematology: Structure and Function of Blood

Study Guide - Practice Questions