Porth's Essentials Of Pathophysiology 5th Edition: Chapter 4 Exam Questions (31 Terms) With Verified Definitions Updated 2024

What is the Lyon principle? {Ans: In females where two X chromosome are present, only one is active. The active chromosome can be the one from the mother or from the father.}Transcription is defined as what? {Ans: The process in which RNA is synthesized from the DNA template.}What are the short and long arms of a chromosome called? {Ans: P and Q.}What is recombinant DNA? {Ans: DNA produced by combining DNA molecules that are not found together in nature.}__________________ forms over half the ribosome. {Ans: Ribosomal RNA (rRNA)}What is RNA interference (RNAi)? {Ans: A process in which small pieces of double stranded RNA suppress gene expression.}General transcription factors are needed for what genes? {Ans: All of them.}If the chaperoning process is disrupted, what can result? {Ans: Denatured and insoluble proteins, which form inclusion bodies (involved in the pathological process of Parkinson, Alzheimer, and Huntington disease)}During transcription, genes are transcribed by what enzyme? {Ans: RNA polymerase.}What proteins assist in the folding of new proteins? {Ans: Molecular chaperones.}Specific transcription factors have what role? {Ans: Activating genes at specific stages of development.}What is translation? {Ans: The synthesis of protein using the