Metabolism & ATPATI TEAS 7 cheat sheet

Energy in the cell

8 key facts 2 practice questions Reviewed Oct 2026

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Atp

Adenosine triphosphate — the cell's energy currency
Energy is released when the third phosphate breaks off
ATP → ADP + Pi + energy

Cellular Respiration

Glucose + O₂ → CO₂ + H₂O + ATP
Glycolysis in the cytoplasm, then the Krebs cycle and electron transport chain in the mitochondrion
Aerobic yields far more ATP than anaerobic

Anaerobic

Without oxygen → fermentation; lactic acid in muscle

Terms

Catabolism breaks down and releases energy; anabolism builds and consumes it

Key takeaway

Energy in the cell

Before you read

Test yourself first: 2 questions

Question 1 of 2

The thyroid gland regulates metabolism by releasing:

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