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CAIE A-Level Biology 15.1.11 Striated Muscle Ultrastructure

Practise labelling Z lines, A and I bands and H zones, locating actin-only, myosin-only or overlap regions and linking repeating sarcomeres to striation.

Syllabus
2028–2030
Course
Biology 9700
Level
A2

Exam points

  • label Z lines, A bands, I bands and H zones on sarcomere diagrams and micrographs
  • identify regions containing actin only, myosin only or overlapping filaments
  • relate repeating sarcomeres and filament arrangement to the striated appearance

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