Practice IB Biology Topic B - Form and Function with authentic exam-style questions for both SL and HL students. This question bank focuses on the exact syllabus content for B - Form and Function and mirrors Paper 1A, 1B, 2 style where relevant.
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What is the function of pulmonary surfactant in the alveoli?
What is true of essential amino acids?
Which of the following is correctly classified as a membrane-bound organelle?
What characteristic of glucose makes it suitable for transport in the bloodstream?
| Sarcomere Region | Resting Length (μm) | Contracted Length (μm) |
|---|---|---|
| A-band | 1.8 | 1.8 |
| I-band | 0.7 | 0.4 |
| H-zone | 0.4 | 0.1 |
Based on the data, which conclusion best supports the sliding filament mechanism?