26. Small regulatory RNAs work in conjunction with: A) RNA polymerase nucleosome

Question

26. Small regulatory RNAs work in conjunction with: A) RNA polymerase nucleosomes C RISC proteins. ) ribosomal RNA. 27. Transcriptional regulation of lac operon by repressor protein and cAMP-rece (CRP) is an example of: A) hierarchical control. B) combinatorial control. C) chromatin remodeling D) imprinting. E) None of the answer options is correct. 28· The CRP-cAMP complex binds the lactose operon when: A) glucose levels and cAMP levels are high. glucose levels are high and cAMP levels are low. C glucose levels are low and cAMP levels are high. D) glucose levels and cAMP levels are low. E) None of the answer options is correct. 29. An activator protein combines with a small molecule and undergoes a c that alters its binding affinity to DNA. This change in shape is an exam C) D) E) induced silencing. allosteric effect. dosage compensation. activator effect. position effect.

Explanation / Answer

Answer 26: The correct answer is RISC proteins.

Answer 27: The correct answer is Hierarchial control

Answer 28: The corrct answer is : When glucose levels are low and cAMP level is high.

Answer 29: The correct answer is allosteric effect.

In this the conformation of a molecule changes upon binding to other molecule.

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