B2.3.5—Cell size as specialization
Specialized cells vary in size according to function, with egg cells especially large because they contain substantial cytoplasm and stored resources.
- Syllabus
- First assessment 2025
- Objective
- B2.3.5
- Level
- HL
Concept essentials
- Cell size can be an adaptation to specialized function.
- Egg cells have a very large volume compared with sperm and blood cells.
- Sperm cells are small and motile rather than large and resource-rich.
- Neurons and muscle fibres show that specialization can also involve unusual cell length.
ConceptIB Biology HL