8. The Control of Gene Expression: Definitions (A Level only) (AQA A-Level Biology): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
ShowHide
Practise the questions
10 questions from this quiz
What effect does acetylation have on gene expression?
What effect does acetylation have on gene expression?
Makes genes more accessible for transcription
Which types of mutation cause a frameshift?
Which types of mutation cause a frameshift?
Addition and deletion
Which stem cells have the maximum differentiation potential?
Which stem cells have the maximum differentiation potential?
Totipotent cells
What does hypermethylation of DNA lead to?
What does hypermethylation of DNA lead to?
Silencing of tumour suppressor genes
What does reverse transcriptase synthesise?
What does reverse transcriptase synthesise?
DNA from RNA templates
In gel electrophoresis, which DNA fragments migrate furthest?
In gel electrophoresis, which DNA fragments migrate furthest?
Smaller fragments
Which characteristic describes malignant tumours?
Which characteristic describes malignant tumours?
Grow rapidly and can metastasise
Which enzyme produces sticky ends in DNA?
Which enzyme produces sticky ends in DNA?
Restriction endonucleases
How does RNA interference control gene expression?
How does RNA interference control gene expression?
By degrading target mRNA molecules
What is the function of DNA ligase?
What is the function of DNA ligase?
Joining sugar-phosphate backbones