IB Biology SL B2.2 Organelles and Compartmentalization Questions

Practise IB Biology SL B2.2 by identifying organelles in cell diagrams and electron micrographs, matching them to functions, and tracing transcription, RNA splicing and mRNA export.

Exam points

Identify organelles in electron micrographs and distinguish them from cell wall, cytoplasm and cytoskeleton.
Match mitochondria to respiration and lysosomes to intracellular digestion.
Match Golgi, ribosomes, plasma membrane and rough ER to protein processing, synthesis, traffic and transport.
Trace nuclear gene expression through transcription, intron removal and mRNA export in an interphase response.

Covered syllabus points

B2.2.1—Organelles as discrete subunits B2.2.2—Nucleus-cytoplasm separation B2.2.3—Advantages of compartmentalization

[Maximum number: 1]

The following electron micrograph has a magnification of $\times 44000$ .

State the name of the main organelle in the electron micrograph.

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Covered syllabus points

Question 1