CourseCourseConceptConceptDocsDocuments

IB Biology HL B2.2 Organelles and Compartmentalization Questions

Practise IB Biology HL B2.2 organelles through compartmentalization, ribosome location, secretion pathways and cristae, grana and stroma adaptations.

Syllabus
First assessment 2025
Course
Biology HL
Level
HL

Exam points

  • identify organelles from diagrams or roles, including lysosomes, Golgi apparatus, rough ER, mitochondria and chloroplasts
  • explain how membranes compartmentalize enzymes, pH conditions and incompatible cellular processes
  • compare cristae, stroma, grana and free versus bound ribosomes as organelle adaptations for function

Covered syllabus points

B2.2.1—Organelles as discrete subunitsB2.2.2—Nucleus-cytoplasm separationB2.2.3—Advantages of compartmentalizationB2.2.4 (HL)—Mitochondrion adaptationsB2.2.5 (HL)—Chloroplast adaptationsB2.2.6 (HL)—Nuclear membrane benefitsB2.2.7 (HL)—Free ribosomes vs. rough ERB2.2.8 (HL)—Golgi apparatusB2.2.9 (HL)—Vesicles in cells

Learn this topic

Study B2.2 Organelles and compartmentalization conceptsOpen the corresponding Concept lesson for explanations, examples and exam connections.

Question 1

[Maximum number: 4]

Testis cells are eukaryotic cells. Identify the structures seen under the electron microscope in testis cells that are not present in prokaryotic cells.

Question 2

[Maximum number: 4]

The structure of membranes allows them to carry out many functions in cells.

Discuss the use of membranes for compartmentalization in eukaryotic cells.

Question 3

[Maximum number: 1]

The image shows part of a chloroplast and was produced by electron tomography.

Figure for Question 3 — IB Biology HL

What is the name of I and which reactions of photosynthesis occur in II?

Name of I

Reactions in II

Matrix

Light-independent reactions

Stroma

Light-independent reactions

Matrix

Light-dependent reactions

Stroma

Light-dependent reactions

All question bank results loaded