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Biology with HamzaUNDERSTAND. CONNECT. EXCEL.
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SORT & EXPLAIN

Read a sarcomere

Identify the landmarks used to describe contraction.

Sort & explain

Choose the best category for each clue, then check the explanations.

Explain what you observed

Why is the A band constant?

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Your study notes

Take the next step

Connect this activity with your lesson notes and chapter practice.

Read a related learning guide →Practise Support & Movement →Open the student notes folder ↗

Concepts and sources

Curriculum connections: 9.4. Selected concepts.

Read the supporting source ↗PMDC curriculum ↗

Questions and explanations are original teaching material; these are not official exam questions.

Keep exploring Support & Movement

Sort & explain

Compare bone, cartilage and muscle

Connect tissue structure with mechanical function.

Model

Slide the filaments

Change sarcomere length and inspect A band, I band and overlap.

Build a process

Build the cross-bridge cycle

Begin with attached myosin after its power stroke.