Explore topic-wise MCQs in Biology.

This section includes 14 Mcqs, each offering curated multiple-choice questions to sharpen your Biology knowledge and support exam preparation. Choose a topic below to get started.

1.

What is the main symptom of heart failure?

A. Lung congestion
B. Vomiting
C. Yellowing of eyes
D. Pain in the chest
Answer» B. Vomiting
2.

What is meant by AV block?

A. Impulse not reaching SA node
B. Impulse not reaching the AV node
C. Impulse not reaching Purkinje fibers
D. Impulse not generating in the heart
Answer» C. Impulse not reaching Purkinje fibers
3.

What is meant by iso-volumetric systole?

A. The time duration between the closing and opening of AV valves
B. The time duration between the closing and opening of semilunar valves
C. The time duration between the closing of AV valves and opening of semilunar valves
D. The time duration between the closing of semilunar valves and the opening of AV valves
Answer» D. The time duration between the closing of semilunar valves and the opening of AV valves
4.

Angina pectoris is a symptom of myocardial infarction.

A. True
B. False
Answer» B. False
5.

Which of the following muscles have the longest refractive period?

A. Skeletal muscles
B. Smooth muscles
C. Cardiac muscles
D. Facial muscles
Answer» D. Facial muscles
6.

What does the depression of ST-segment depict?

A. Ischemia
B. Hypokalemia
C. Myocardial infarction
D. Acute heart attack
Answer» B. Hypokalemia
7.

Which of the following represents the enlargement of auricles?

A. Enlargement of P-wave
B. Enlargement of QR segment
C. Depression of ST segment
D. Elevation of ST segment
Answer» B. Enlargement of QR segment
8.

By counting the number of which of the following waves, the heartbeat of a person can be determined?

A. P-wave
B. QRS complex
C. ST-segment
D. PQ interval
Answer» C. ST-segment
9.

The end of the T-wave marks the end of the systole.

A. True
B. False
Answer» B. False
10.

Which of the following represents the depolarisation of the ventricles?

A. P-wave
B. T-wave
C. QRS complex
D. PQ interval
Answer» D. PQ interval
11.

Which of the following waves represent the excitation of the atria?

A. P-wave
B. QRS complex
C. T-wave
D. ST-segment
Answer» B. QRS complex
12.

Which of the following letters is marked incorrectly in the given diagram?

A. P & R
B. Q & T
C. T & S
D. T-wave
Answer» B. Q & T
13.

To measure ECG, usually how many electrodes are connected to a patient?

A. One
B. Two
C. Three
D. Four
Answer» D. Four
14.

What is the full form of ECG?

A. Electricity cardiac group
B. Electrocardio group
C. Electrocardium granules
D. Electrocardiogram
Answer» E.