_____ is known as a cardiac pacemaker.

A. Diastole
B. Systole
C. Cardiac muscle
D. SA node
E. AV node


Answer: D

Biology & Microbiology

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A) large ions B) steroids C) lipids D) proteins E) small ions

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The nucleolus manufactures the components of ribosomes?

a. true b. false

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Aedes mosquitoes are the vector involved in yellow fever, and dengue fever, and Zika virus transmission.

Answer the following statement true (T) or false (F)

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