If a B-DNA having superhelical density  is -0.05 and the value of LK = 200, then what will be the length of DNA

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#Question id: 24441

#Unit 13. Methods in Biology

If the heart rate is 90 beats/min, what is the cycle length?

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#Question id: 24442

#Unit 13. Methods in Biology

Match the following Column I with Column II 

Column I	Column II
A. PR segment	i. Plateau portion of the ventricular action potential
B. PR interval	ii. Conduction through atrioventricular node
C. ST segment	iii. The time from initial depolarization of the atria to initial depolarization of the ventricles
D. ST interval	iv. An isoelectric portion of the QT interval

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#Question id: 24443

#Unit 13. Methods in Biology

Normal electrocardiograms recorded from the three standard bipolar limb leads (I, II, III). Match the following.

Column I	Column II
a. P wave	i. Positive
b. T wave	ii. Negative
c. R wave
d. S wave

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#Question id: 24444

#Unit 13. Methods in Biology

What is the His bundle electrogram (HBE)?

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#Question id: 24445

#Unit 13. Methods in Biology

An electrocardiogram is a painless, noninvasive way to help diagnose many common heart problems. Which of the following would not diagnose by ECG?

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#Question id: 24446

#Unit 13. Methods in Biology

What is the purpose of holter moniter in EKG ?