Genetic Control of Metabolism
Mutagenesis, recombinant DNA, plasmid and artificial-chromosome vectors, restriction enzymes, ligase, markers and engineered micro-organisms.
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
Compare mutagenesis with targeted recombinant-DNA approaches to strain improvement.
Exam cue: Compare mutagenesis with targeted recombinant-DNA approaches to strain improvement.
Concept 2
Explain restriction endonuclease cutting and ligase joining in recombinant vector construction.
Exam cue: Explain restriction endonuclease cutting and ligase joining in recombinant vector construction.
Concept 3
Relate restriction sites, regulatory sequences, origins of replication, selectable markers and safety genes to vector function.
Exam cue: Relate restriction sites, regulatory sequences, origins of replication, selectable markers and safety genes to vector function.
Risk pitfalls and guardrails
Restriction endonuclease cuts DNA; ligase seals the backbone.
Guardrail: Check vocabulary, sequence, direction, compartment, units and whether the evidence supports causation or only an association.
A selectable marker identifies transformed cells; it does not direct transcription by itself.
Guardrail: Check vocabulary, sequence, direction, compartment, units and whether the evidence supports causation or only an association.
Memory anchors
Vector essentials
Insert site, regulation, origin and selectable marker.
Recombinant enzymes
Restriction cuts; ligase links.
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
How can mutagenesis improve a wild microbial strain for industrial use?
Which approach introduces a chosen gene into a micro-organism rather than relying on random mutation?
Answer all questions to submit.
Next step personalized recommendations
Continue learning
Move forward only after this module is stable.
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