Factors affecting gene expression Quiz
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5 questions, one answer each
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1. What do transcription factors bind to?
- A. mRNA codons
- B. Specific base sequences on DNA
- C. The ribosome
- D. Histone tails only
2. Which process allows one gene to code for several proteins?
- A. DNA replication
- B. Translation
- C. Alternative splicing
- D. Anticodon matching
3. Methyl groups added to cytosine in a promoter most likely cause:
- A. Increased transcription
- B. Silencing of the gene
- C. Removal of introns
- D. Production of more tRNA
4. Which change to histones would increase transcription of a gene?
- A. Removal of acetyl groups
- B. Addition of acetyl groups
- C. Addition of introns
- D. Binding of a repressor
5. Why is epigenetic modification important in cell differentiation?
- A. It changes the base sequence of genes in each cell type
- B. It switches different genes on or off in cells with the same genome
- C. It removes unwanted chromosomes
- D. It prevents mitosis