Gene Regulation
Biology ⇒ Genetics and Heredity
Gene Regulation starts at 11 and continues till grade 12.
QuestionsToday has an evolving set of questions to continuously challenge students so that their knowledge grows in Gene Regulation.
How you perform is determined by your score and the time you take.
When you play a quiz, your answers are evaluated in concept instead of actual words and definitions used.
See sample questions for grade 11
A scientist observes that a gene is highly expressed in liver cells but not in muscle cells. What is the most likely explanation for this observation?
Describe how environmental factors can influence gene regulation.
Describe the difference between inducible and repressible operons.
Describe the role of enhancers in eukaryotic gene regulation.
Describe the role of microRNAs (miRNAs) in gene regulation.
Explain how alternative splicing can increase protein diversity.
Explain how the presence of lactose affects the lac operon in E. coli.
Explain why gene regulation is important for multicellular organisms.
What is gene regulation?
What is the function of a repressor protein in gene regulation?
A mutation causes the promoter region of a gene to become less accessible to RNA polymerase. Predict and explain the effect this mutation would have on the expression of the gene.
A researcher finds that a specific gene is transcribed but not translated into protein. Suggest two possible mechanisms of post-transcriptional regulation that could explain this observation.
Describe how feedback inhibition in the trp operon of E. coli helps maintain homeostasis of tryptophan levels in the cell.
Explain how the presence of both glucose and lactose in the environment affects the expression of the lac operon in E. coli.
Explain why mutations in regulatory sequences (such as promoters or enhancers) can have significant effects on phenotype, even if the coding sequence of the gene is unchanged.
