Cellular Differentiation
Selective gene expression, specialised cells, plant meristems, embryonic and tissue stem cells, and therapeutic and research uses.
How to study Higher Biology
Move from accurate biological mechanisms to unfamiliar data, experimental evidence and justified conclusions. Use current official materials for the written, extended-response and controlled-assignment formats that this question bank does not reproduce.
Core concepts
Concept 1
Explain differentiation as selective gene expression that produces cell-specific proteins.
Exam cue: Explain differentiation as selective gene expression that produces cell-specific proteins.
Concept 2
Compare pluripotent embryonic stem cells with multipotent tissue stem cells and plant meristems.
Exam cue: Compare pluripotent embryonic stem cells with multipotent tissue stem cells and plant meristems.
Concept 3
Evaluate therapeutic, disease-model and drug-testing uses alongside ethical issues.
Exam cue: Evaluate therapeutic, disease-model and drug-testing uses alongside ethical issues.
Risk pitfalls and guardrails
Differentiated cells usually retain the genome; they express different genes.
Guardrail: Check vocabulary, sequence, direction, compartment, units and whether the evidence supports causation or only an association.
Tissue stem cells are not normally able to form every cell type in the organism.
Guardrail: Check vocabulary, sequence, direction, compartment, units and whether the evidence supports causation or only an association.
Memory anchors
Differentiation
Same genome, selected genes, specialised proteins.
Stem-cell potency
Pluripotent: many body types; multipotent: a tissue range.
Checkpoint rule
Do the check-up only after you can summarize each concept in one sentence and identify one dangerous pitfall from memory.
Knowledge Check (after reading)
Short check-up to confirm understanding of this module.
Check-up Questions
What occurs during cellular differentiation?
Two specialised cells from one animal contain the same genome but different proteins. What best explains this?
Answer all questions to submit.
Next step personalized recommendations
Continue learning
Move forward only after this module is stable.
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