Same question but two different sections A modification is made in the Gas (G alpha s) signaling pathway by the process of evolution. This modification results in negativefeedback within the Gas pathway. Which of the following modifications would result in negative feedback that would attenuate(decrease) the resulting signal while the ligand activating the pathway is present?A. The G-protein coupled receptor that activates Gas is endocytosed and degraded.B. A target gene is transcribed that encodes for phosphodiesterase.C. Adenylyl cyclase activates PKAO D. Active PKA inhibits adenylyl cyclase. Histone acetyltransferases act to unwind cis-regulatory DNA sequences from histones inside the nucleus. In general, it canbe said that histone acetyltransferases can:O A. allows transcriptional regulators easier access to the DNA, leading to gene phosphorylation.B. allows transcriptional regulators easier access to the DNA, leading to changes in gene expression.O C. hinders transcriptional regulator access to the DNA, leading to gene phosphorylation.O D. hinders transcriptional regulator access to the DNA, leading to changes in gene expression.

First section answer is (D)Active PKA inhibits adenylyl Cyclase. Histone acetyltransferases can…

A modification is made in the Gas (G alpha s) signaling pathway by the process of evolution. This modification results in negat feedback within the Gas pathway. Which of the following modifications would result in negative feedback that would attenuat (decrease) the resulting signal while the ligand activating the pathway is present? O A. The G-protein coupled receptor that activates Gas is endocytosed and degraded. O B. A target gene is transcribed that encodes for phosphodiesterase. O C. Adenylyl cyclase activates PKA D. Active PKA inhibits adenylyl cyclase.

A modification is made in the Gas (G alpha s) signaling pathway by the process of evolution. This modification results in negat feedback within the Gas pathway. Which of the following modifications would result in negative feedback that would attenuat (decrease) the resulting signal while the ligand activating the pathway is present? O A. The G-protein coupled receptor that activates Gas is endocytosed and degraded. O B. A target gene is transcribed that encodes for phosphodiesterase. O C. Adenylyl cyclase activates PKA D. Active PKA inhibits adenylyl cyclase.

Human Heredity: Principles and Issues (MindTap Course List)

11th Edition

ISBN:9781305251052

Author:Michael Cummings

Publisher:Michael Cummings

Chapter10: From Proteins To Phenotypes

Section: Chapter Questions

Problem 21QP: Transcriptional regulators are proteins that bind to promoters (the 5-flanking regions of genes) to...

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