Biology GCSE
initial rate and tangent calculations
What initial rate and tangent calculations means in Biology GCSE, as defined for OCR.
Definition of initial rate and tangent calculations
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Reference: OCR
The initial rate is found from the tangent to the steepest part of a product-time curve, giving the most valid measure of enzyme activity before substrate concentration becomes limiting.
Topics that use initial rate and tangent calculations
- Rates of enzyme-controlled reactions (OCR GCSE)
Related terms
- colorimetric and indicator endpoints
- digital stopwatch
- gas collection apparatus
- graduated measuring syringes
- parallax error
- pre-equilibration of biological reagents
- safe laboratory heating
- spotting tile sampling technique
Using initial rate and tangent calculations in the exam
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