Which of the following statements about a protein-coding gene is NOT true?
A: An enhancer is not a DNA sequence.
B: It may have many exons and introns.
C: The promoter region is not transcribed.
D: Transcription factors can bind to the promoter region.
A: An enhancer is not a DNA sequence.
B: It may have many exons and introns.
C: The promoter region is not transcribed.
D: Transcription factors can bind to the promoter region.
举一反三
- In the initiation process of transcription, the sequence of DNA that allows RNA polymerase to bind is called A: the promoter region. B: the enhancer region. C: the termination region. D: the un-translated region (UTR)
- Operator: ( ) A: An operator is a DNA region that is working with promoter for genes to express. B: An operator is a DNA region at 5’ of a gene for a repressor to bind to prevent gene expression. C: An operator is a repressor protein to help genes to express. D: An operator is a repressor protein to inhibit genes to express.
- What about inserting a base into the coding region of a gene？ A: No impact B: It will change all amino acid sequences of the protein downstream of the insertion point C: Depending on the insertion point, it may have different effects on the protein D: An amino acid will be inserted into the protein sequence E: Three amino acids will be inserted into the protein sequence
- Which of the following genes are structural genes? (). A: The promoter B: The enhancer C: The silencing D: The guide protein synthesis
- In prokaryotic cells, the DNA sequence which can be recognized and bound with RNA polymerase is called ( ) A: enhancer B: promoter C: silencer D: operator E: attenuator