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Edexcel A-Level Biology AS 3.6 Recognising Organelles in Em Images Questions

Compare the labelled profiles, identify the section orientation or cutting plane and link the two-dimensional appearance to the same three-dimensional organelle.

Syllabus
First assessment 2019
Course
Biology YBI11
Level
AS

Exam points

  • Explain contrasting EM profiles through transverse, longitudinal or angled sectioning.

Edexcel A-Level Biology AS 3.6 Recognising Organelles in Em Images Questions question 1

[Maximum number: 2]

Insulin is a protein produced in beta cells in the pancreas.
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Figure for Question Edexcel A-Level Biology AS 3.6 Recognising Organelles in Em Images Questions question 1 — Edexcel A-Level Biology AS

The structures labelled T and U are the same type of organelle.

Suggest why these structures look different in this photograph.

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