Expression of ---- does not require new protein synthesis. a.immediate early genes b. delayed early genes c. late genes.One growth factor can activate different pathways because ---- a. growth factor receptor dimerizes b. receptor transphosphorylates c. each receptor binds to several different proteins that have SH2 domains d. structural changes occur in proteins of signal transduction pathway. According to Knudson’s two-hit hypothesis, in children with familial retinoblastoma, a. only a single somatic mutation is needed to eliminate Rb function. b. children have genetically wild type gene at the Rb locus, and retinoblastoma development requires two successive somatic mutationsc. both a and b are a possibilityMethylation of a promoter results in a. overexpression of the downstream gene b. suppression of expression of the downstream gene.

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Description: Expression of ---- does not require new protein synthesis. a.immediate early genes b. delayed early genes c. late genes.One growth factor can activate different pathways because ---- a. growth factor receptor dimerizes b. receptor transphosphoryl

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Human Anatomy & Physiology (11th Edition)

11th Edition

ISBN:9780134580999

Author:Elaine N. Marieb, Katja N. Hoehn

Publisher:Elaine N. Marieb, Katja N. Hoehn

Chapter1: The Human Body: An Orientation

Section: Chapter Questions

Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...

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Expression of ---- does not require new protein synthesis. a.immediate early genes b. delayed early genes c. late genes.
One growth factor can activate different pathways because ---- a. growth factor receptor dimerizes b. receptor transphosphorylates c. each receptor binds to several different proteins that have SH2 domains d. structural changes occur in proteins of signal transduction pathway.
According to Knudson’s two-hit hypothesis, in children with familial retinoblastoma, a. only a single somatic mutation is needed to eliminate Rb function.

b. children have genetically wild type gene at the Rb locus, and retinoblastoma development requires two successive somatic mutations

c. both a and b are a possibility
Methylation of a promoter results in a. overexpression of the downstream gene b. suppression of expression of the downstream gene.

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