Fill in the blank:
promotor, induction, presence, will not, will, operon, repressor, repression, overabundance, operator, control region,
1. If the repressor is bound to the operator, then RNA polymerase______ transcribe the structural genes.
2. The ________ controls whether RNA polymerase can advance along the DNA strand or not.
3. The _______ operates differently depending on whether the operon is inducible or repressible.
4. An _________ controls the expression of functionally related genes and consists of a control region and structural genes.
5. ______ decreases expression of the structural genes. This typically occurs in response to an _____ of a substrate.
6. The _____ contains a promoter and an operator.
7. If the repressor is not bound to the operator, then RNA polymerase _____ transcribe the structural genes.
8. ______ increases expression of the structural genes. This typically occurs in response to the _______ of a substrate.
9. The ______ is the region of DNA where RNA polymerase initially binds.
Fill in the blank:
promotor, induction, presence, will not, will, operon, repressor, repression, overabundance, operator, control region,
1. If the repressor is bound to the operator, then RNA polymerase______ transcribe the structural genes.
2. The ________ controls whether RNA polymerase can advance along the DNA strand or not.
3. The _______ operates differently depending on whether the operon is inducible or repressible.
4. An _________ controls the expression of functionally related genes and consists of a control region and structural genes.
5. ______ decreases expression of the structural genes. This typically occurs in response to an _____ of a substrate.
6. The _____ contains a promoter and an operator.
7. If the repressor is not bound to the operator, then RNA polymerase _____ transcribe the structural genes.
8. ______ increases expression of the structural genes. This typically occurs in response to the _______ of a substrate.
9. The ______ is the region of DNA where RNA polymerase initially binds.
Related textbook solutions
Related questions
1. What is the term when the product of a biochemical pathway inhibits the activity of the first enzyme of a pathway?
| feedback inhibition. | ||
| activator inhibition. | ||
| diffusional regulation. | ||
| enzyme activation. |
2. Through control of gene expression, prokaryotes respond to changing __________ conditions.
| internal | ||
| protein | ||
| environmental | ||
| genetic |
3. A protein that negatively regulates transcription by binding to the operator is known as the
| operon | ||
| repressor | ||
| activator | ||
| inducer |
4. During attenutation, when tryptophan levels are high, the ________ stem-loop forms and transcription ________ the trpL gene.
| 1-2, ends just past | ||
| 3-4, ends just past | ||
| 1-2, continues beyond | ||
| 3-4, continues beyond |
5. The process of turning on the expression of a gene in response to a substance in the environment is called:
| constituation. | ||
| repression. | ||
| induction. | ||
| catabolism. |
6. What is a function of some specific transcription factors?
| to bind to the promoter region of the gene to facilitate the proper alignment of the RNA polymerase | ||
| to bind to the centromere to induce meiosis | ||
| to bind to enhancer regions to help regulate gene transcription | ||
| to bind to the operator to recruit sigma factor |
7. How does exposing an E.coli cell to glucose affect the regulation of the lac operon via CAP?
| cAMP binds to CAP and transcription is increased. | ||
| cAMP binds to CAP and transcription is decreased. | ||
| cAMP does not bind to CAP and transcription is increased. | ||
| cAMP does not bind to CAP and transcription is decreased. |
8. The lac repressor protein works when mutations in the repressor gene and structural genes are:
| in cis or in trans. | ||
| in trans only. | ||
| in cis only. | ||
| in both prokaryotes and eukaryotes. |
