Starting with a fertilized egg (zygote), a series of six cell divisions would produce an early embryo with how many cells?

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#Question id: 24442

#SCPH06 I Botany

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

#SCPH01 Biochemistry

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: 24443

#SCPH06 I Botany

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

#SCPH01 Biochemistry

What is the His bundle electrogram (HBE)?

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#Question id: 24444

#SCPH06 I Botany

What is the His bundle electrogram (HBE)?

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#Question id: 24445

#SCPH01 Biochemistry

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