CourseCourseConceptConceptDocsDocuments

Edexcel A-Level Biology AS 3p 5 Evaluating Results Uncertainty and Errors Questions

Quote relevant values, compare variation or error bars and state exactly which evidence supports, weakens or prevents the claimed difference or relationship.

Syllabus
First assessment 2019
Course
Biology YBI11
Level
AS

Exam points

  • Evaluate significance claims by comparing means, spread and standard-deviation bars.
  • Use controls, repeats and missing uncertainty to judge whether a conclusion is supported.
  • Explain anomalous or reduced values through measurement, recovery or biological causes.

Edexcel A-Level Biology AS 3p 5 Evaluating Results Uncertainty and Errors Questions question 1

[Maximum number: 3]

The enzyme invertase breaks down sucrose into its two component monosaccharides.

The graph shows the results of this investigation.

Initial rate of reaction as a percentage of the maximum initial rate (\%)

Figure for Question Edexcel A-Level Biology AS 3p 5 Evaluating Results Uncertainty and Errors Questions question 1 — Edexcel A-Level Biology AS

Criticise the conclusion that 5.5 is the optimum pH for this enzyme.

All question bank results loaded