Experiments show that mutations at gene E lead to non-repressible transcription of trp genes. Why?

Q: synaptic knobs of a nueron have what function? a. they release neurotransmitter into the synaptic…

A: The nervous system is the specialized system that controls the sensory and motor activity in the…

Q: How would a mutation which prevented Gal3 from binding to Gal80 affect gene expression from the GAL…

A: Galactose metabolizing genes express themselves in the presence of galactose. Galactose is…

Q: Name the lambda promoters whose expression is regulated by the cro protein. For each promoter you…

A: CI represses cro and Cro represses cI. This is referred to as the double-negative feedback loop and…

Q: Briefly explain How does post-transcriptional regulation work in prokaryotic and euk

A: Post-transcriptional regulation is essential for controlling gene expression in highly dynamic…

Q: Comparison of different tissues shows that the ITY gene produces a 900 nt mature mRNA and a 190…

A: Alternative splicing is the mechanism that produces multiple mature mRNAs from a single primary…

Q: What is the effect of supper repressor (lacI^s) mutations?

A: Lac operon is a transcriptionally regulated system in E.coli which enables the bacteria to utilize…

Q: What does the statement above mean

A:

Q: Briefly describe an experiment you could perform to isolate ER-associated ribosomes and test if…

A: Ribosomes are cell organelles that are the site of important cellular processes such as translation…

Q: RNAP can access the lacZ promoter irrespective of whether CAP-CAMP is binding the CAP o True False

A: Lac operon is a set of structural genes regulated by a common promoter. It is found in bacteria.

Q: Consider the CT/CGRP example of alternative splicing. Which different types of alternative splicing…

A: Alternative splicing is a technique that allows messenger RNA (mRNA) to control the production of…

Q: Suppose MYC regulates gene X by recruiting DNA methyltransferases (DNMTS). Which of the following…

A: cis regulatory elements are regions of non coding DNA which regulate transcription of neighbouring…

Q: At what DNA strand is the ACTB gene coded? How many ACTB genes are coded in this region?

A: The ACTB gene codes for the Beta-actin protein, which is a member of the actin protein family. Actin…

Q: CTP synthetase is allosterically activated by GTP. What function might this play in the cell?

A: CTP synthetase is an enzyme which converts UTP ( Uridine Triphosphate) to CTP ( Cytidine…

Q: Describe the steps that need to occur for the glucocorticoid receptor to bind to a GRE.

A: Glucocorticoids can be defined as the are hormones that are essential for life and their synthesis…

Q: The post transcriptional modifications of the mature prokaryotic messenger RNA are essential in…

A: Transcription is a heterocatalytic action of DNA by means of which RNA is synthesized from specific…

Q: The binding of a small effector molecule, protein-protein interactions, and covalent modifications…

A: Transcription factors that bind to regulatory elements are called as regulatory transcription…

Q: Does adenylate cyclase become more active when the inhibitory (Gia) protein is mutated and increases…

A: The GPCR pathway involves activation of cell surface receptor that is a 7 pass transmembrane…

Mitochondrial Mutations

A mitochondrion is a cellular organelle that serves as the site for cellular respiration and energy production (ATP or Adenosine Triphosphate). It is a double-membrane-bound organelle and is only present in eukaryotic cells.