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Combined Science: Biology

GCSE · Edexcel · higher

QuestionsFlashcards

Disease
Defence Against Disease
Development of Medicines
- Antibiotics
  4
- Discovery & Development of New Drugs
  6
Non-Communicable Diseases
- Lifestyle & Non-Communicable Disease
  8
- Cardiovascular Disease
  6

The Organism in the Environment
Human Influences on the Environment
- Human Impact on Biodiversity
  6
- Benefits of Maintaining Biodiversity
  6
Cycles within Ecosystems

Rate Calculations for Enzyme Activity Flashcards

All 4 cards in this deck

What is the equation for the rate of an enzyme reaction from the time taken?: rate = 1 ÷ time (units: s⁻¹, i.e. per second)
What is the equation for the rate of an enzyme reaction from the amount of product formed?: rate = amount of product formed ÷ time (e.g. g per minute)
In an enzyme investigation, what is an anomalous result?: A repeat result that does not fit the pattern of the other repeats.
e.g. one curdling time of 45 s when the other repeats at that temperature are 20 s and 22 s
What should you do with an anomalous result when working out the mean time for an enzyme reaction?: Leave it out, and calculate the mean from the remaining repeats only.