โ“ Multiple Choice Questions (PCI 2026)

BP104T MCQs โ€“ Human Anatomy, Physiology and Pathophysiology I

Test your knowledge with authentic multiple-choice questions formulated according to the new PCI B.Pharm curriculum. Each question includes the correct answer and a comprehensive explanation.

Q1

Which cellular organelle is responsible for generating ATP through oxidative phosphorylation?

โ—‹Ribosome
โœ“Mitochondria
โ—‹Golgi apparatus
โ—‹Lysosome
Correct Answer: Mitochondria

Mitochondria are the powerhouses of the cell that synthesize ATP via oxidative phosphorylation and the Krebs cycle.Mitochondria are the powerhouses of the cell that synthesize ATP via oxidative phosphorylation and the Krebs cycle.

Q2

The primary pacemaker of the human heart is the:

โœ“Sinoatrial (SA) node
โ—‹Atrioventricular (AV) node
โ—‹Bundle of His
โ—‹Purkinje fibers
Correct Answer: Sinoatrial (SA) node

The SA node initiates electrical impulses at approximately 70-80 beats per minute.The SA node initiates electrical impulses at approximately 70-80 beats per minute.

Q3

In the blood coagulation cascade, which factor converts prothrombin to thrombin?

โœ“Prothrombinase (Factor Xa + Va complex)
โ—‹Fibrinogen
โ—‹Factor VIII
โ—‹Plasmin
Correct Answer: Prothrombinase (Factor Xa + Va complex)

Prothrombin activator (Factor Xa, Factor Va, phospholipids, and calcium) catalyzes the conversion of prothrombin to thrombin.Prothrombin activator (Factor Xa, Factor Va, phospholipids, and calcium) catalyzes the conversion of prothrombin to thrombin.

Q4

The QRS complex on a standard Electrocardiogram (ECG) represents:

โ—‹Atrial depolarization
โœ“Ventricular depolarization
โ—‹Ventricular repolarization
โ—‹Atrial repolarization
Correct Answer: Ventricular depolarization

The QRS complex corresponds to the electrical depolarization of the ventricular myocardium preceding ventricular contraction.The QRS complex corresponds to the electrical depolarization of the ventricular myocardium preceding ventricular contraction.

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