Homework SoursePlace the correct word in the missing position to complete t
Place the correct word in the missing position to complete the sentences.
1. The promoter is the region of DNA where RNA polymerase initially binds.
2. The control region contains a promoter and an operator.
3. If the repressor is bound to the operator, then RNA polymerase will transcribe the structural genes.
4. Overabundance decreases expression of the structural genes. This typically occurs in response to an induction of a substrate.
5. An operon controls the expression of functionally related genes and consists of a control region and structural genes.
6. If the repressor is not bound to the operator, then RNA polymerase will not transcribe the structural genes.
7. Repression increases expression of the structural genes. This typically occurs in response to the presence of a substrate.
8. The repressor operates differently depending on whether the operon is inducible or repressible.
9. The operator controls whether RNA polymerase can advance along the DNA strand or not.
Solution
1. The promoter is the region of DNA where RNA polymerase initially binds.
2. The regulatory region/control region contains a promoter and an operator.
3. If the repressor is bound to the operator, then RNA polymerase will not transcribe the structural genes.
4. Repression decreases expression of the structural genes. This typically occurs in response to an overabundance of a substrate (The answer is with respect to Lac operon).
5. An operon controls the expression of functionally related genes and consists of a control region and structural genes.
6. If the repressor is not bound to the operator, then RNA polymerase will transcribe the structural genes.
7. Induction increases expression of the structural genes. This typically occurs in response to the presence of a substrate.
8. The repressor operates differently depending on whether the operon is inducible or repressible.
9. The operator controls whether RNA polymerase can advance along the DNA strand or not.
