OCR A Level Biology B (Advancing Biology)
OCR A Level Biology B (Advancing Biology) Gene Technologies Exam Questions
Free OCR A Level Biology B (Advancing Biology) exam questions on Gene Technologies, with mark schemes. Covers PCR, electrophoresis, DNA sequencing, genetic engineering and gene therapy.
Gene Technologies exam questions
1 question pack of real past exam questions with its mark scheme. Answer every question without notes, then mark your answers line by line against the mark scheme.
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A Level Biology Flashcards
Every answer is written in mark scheme wording, so you learn exactly what examiners give marks for. Pick your exam board, then test yourself with the questions on this page.
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About OCR A Level Biology B (Advancing Biology) Gene Technologies
This topic covers modern genetic technology.
What you need to know
- PCR Amplifying DNA with Taq polymerase.
- Electrophoresis Separating DNA by size.
- Genetic engineering Restriction enzymes, ligase and vectors.
- Applications Genetic screening, GM crops and gene therapy.
Common mistakes in Gene Technologies
- Forgetting primers in PCR.
- Saying smaller fragments move less.
- Mixing somatic and germ line therapy.
Try three Gene Technologies exam-style questions
1. State why Taq polymerase is used. (1 mark)
Show the mark scheme answer
It is not denatured at high temperatures.
2. Explain why sticky ends are useful. (1 mark)
Show the mark scheme answer
They allow complementary base pairing between DNA fragments.
3. Give one concern about GM crops. (1 mark)
Show the mark scheme answer
Spread of genes to wild plants.
Gene Technologies FAQs
What does this topic cover?
PCR, electrophoresis, engineering and applications.
Which practical links here?
Gel electrophoresis.
What is genetic screening?
Testing DNA for alleles linked to disease.
Revise this topic with flashcards: A Level Biology Flashcards, with mark scheme answers for Anki and Quizlet.
