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Respiration, Immune System, Blood Cells › View

What happens to breathing and heart rate during exercise?

A. Breathing rate increases and heart rate decreases

B. They both increase

C. They both decrease

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Cellular Respiration › View

Where does the Citric Acid Cycle (Krebs Cycle) happen in the cell?

A. Cytosol

B. Inner Mitochondrial Membrane

C. Cell Membrane

D. Mitochondrial Matrix

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