11th Class Biology Sample Paper Biology Sample Paper-1

  • question_answer
    Which one is correct regarding electrocardiogram (ECG)?

    A)  P-wave represents the electrical excitation of the ventricles.

    B)  QRS complex represents repolarisation of the ventricles.

    C)  T-wave represents repolarisation of the atria.

    D)  By counting the time between two QRS complexes one can determine the pulse rate.

    Correct Answer: D

You need to login to perform this action.
You will be redirected in 3 sec spinner