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Other quiz:

Circulatory System › View

What allows blood to move from the atrium into the ventricles?

A. Pumping of the heart muscle

B. passing through the aorta

C. opening of a valve

D. closing of pulmonary artery

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Biotechnology › View

At what temperature does the Extension step of PCR occur?

A. 95°C

B. 50-65°C

C. 72°C

D. Any temperature

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