ATI RN Pharmacology Proctored Exam 2026 | Practice Questions & Answers | NGN-Style Case Studies with Detailed Rationales

AZ-104 Renewal Assessment & Exam Practice Questions
2026 | Guaranteed Pass Azure Administrator Prep


Section 1: Blood & Formed Elements (Q1–Q40)

Question 1

Which of the following is the primary constituent of human blood plasma by weight?

 A) Albumin
 B) Water
 C) Electrolytes
 D) Fibrinogen

Correct Answer: B

Rationale: Water makes up approximately 90–92% of total blood plasma volume, serving as
the solvent for nutrients, gases, and waste products.

Question 2

Which plasma protein is the main contributor to colloid osmotic pressure (oncotic pressure)
in the capillaries?

 A) Gamma globulin
 B) Fibrinogen
 C) Albumin
 D) Prothrombin

,Correct Answer: C

Rationale: Albumin constitutes roughly 60% of total plasma proteins and creates the
osmotic gradient required to draw fluid back into the venous end of capillaries.

Question 3

Which cell organelle is lacking in mature human erythrocytes?

 A) Ribosomes
 B) Mitochondria
 C) Nucleus
 D) All of the above

Correct Answer: D

Rationale: Mature red blood cells lack nuclei, mitochondria, and ribosomes to maximize
intracellular space for hemoglobin and prevent aerobic consumption of the oxygen they
transport.

Question 4

What hormone produced by the kidneys stimulates the bone marrow to produce red blood
cells?

 A) Thrombopoietin
 B) Erythropoietin (EPO)
 C) Calcitriol
 D) Renin

Correct Answer: B

,Rationale: Hypoxia detected by renal cells stimulates the synthesis and release of
erythropoietin (EPO), which acts on hematopoietic stem cells in red bone marrow.

Question 5

Which formed element is derived from the fragmentation of megakaryocytes?

 A) Reticulocytes
 B) Monocytes
 C) Thrombocytes (Platelets)
 D) Eosinophils

Correct Answer: C

Rationale: Platelets are non-cellular cytoplasmic fragments shed from giant cells called
megakaryocytes in the bone marrow.

Question 6

During hemoglobin breakdown, the iron-free heme moiety is ultimately converted into which
pigment excreted in bile?

 A) Ferritin
 B) Bilirubin
 C) Hemosiderin
 D) Transferrin

Correct Answer: B

Rationale: Biliverdin derived from heme degradation is reduced to bilirubin, transported to
the liver, and excreted in bile.

, Question 7

Which leukocyte is the most abundant type in a normal differential white blood cell count?

 A) Lymphocyte
 B) Monocyte
 C) Eosinophil
 D) Neutrophil

Correct Answer: D

Rationale: Neutrophils account for 50–70% of circulating white blood cells, serving as first
responders to bacterial infections.

Question 8

Which granular leukocyte releases histamine and heparin during inflammatory and allergic
responses?

 A) Basophil
 B) Eosinophil
 C) Neutrophil
 D) Lymphocyte

Correct Answer: A

Rationale: Basophils contain dense granules filled with histamine (a vasodilator) and
heparin (an anticoagulant).

Question 9