B1A GLOSSARY

ALL THE WORDS YOU NEED TO KNOW FOR B1A SINGLE SCIENCE, OCR BOARD - HIGHER TIER, BIOLOGY

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B1a
Aerobic respiration ­ respiration with oxygen.
Anaerobic respiration ­ respiration without oxygen.
Diastolic pressure ­ blood pressure when the heart is relaxing.
Lactic acid ­ chemical that causes muscle fatigue and is produced
during anaerobic respiration.
Oxygen debt - caused by anaerobic respiration and the
production of lactic acid. After exercise the debt
has to be repaid to break down lactic acid.
Systolic pressure ­ blood pressure when the heart is contracting.

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