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Which method is utilized by eukaryotes to control their gene expression that is not used in bacteria?
Eukaryotes utilize mechanisms such as chromatin remodeling, alternative splicing, and RNA interference to regulate gene expression, which are not commonly used in bacteria. These mechanisms allow for more complex and nuanced control of gene expression in eukaryotic cells.
What mechanisms exerts gene control by suppressing transcription in eukaryote?
Gene control by suppression of transcription in eukaryotes can be achieved through various mechanisms such as DNA methylation, histone modification, and the action of transcriptional repressors. These mechanisms can block access of transcription factors to the gene promoter region, leading to reduced gene expression. Additionally, chromatin remodeling complexes can be involved in creating repressive chromatin structures that prevent transcriptional machinery from binding to DNA.
What is a real life example for chromatin?
A real-life example of chromatin can be observed in human cells, where it plays a crucial role in gene regulation and expression. For instance, during the process of cell differentiation, chromatin remodeling allows specific genes to be activated or silenced, which is essential for the development of specialized cell types, such as neurons or muscle cells. This dynamic arrangement of chromatin helps determine how genetic information is utilized in response to various environmental signals.
What are the differences in gene expression regulation between eukaryotes and prokaryotes?
In eukaryotes, gene expression regulation is more complex and involves multiple levels of control, such as chromatin remodeling, transcription factors, and post-transcriptional modifications. Prokaryotes, on the other hand, have simpler regulation mechanisms, mainly involving operons and transcription factors.
What is a non histones protein?
Non-histone proteins are proteins that are components of chromatin but are not involved in forming the nucleosome structure like histones. They play a variety of roles in chromatin organization, gene regulation, and DNA replication and repair. Examples of non-histone proteins include transcription factors, chromatin remodeling complexes, and DNA repair enzymes.
What part does acetylation play in gene expression?
Acetylation of histones, which are proteins that help package DNA in the cell, typically leads to a more relaxed chromatin structure. This allows for easier access of the transcriptional machinery to the DNA, promoting gene activation and expression. Acetylation is often associated with increased gene expression due to this facilitating effect on transcription.
Is NOT true about gene regulation in eukaryotic cells?
One statement that is NOT true about gene regulation in eukaryotic cells is that it occurs exclusively at the level of transcription. In reality, gene regulation in eukaryotes involves multiple levels, including transcriptional, post-transcriptional, translational, and post-translational mechanisms. Additionally, factors such as chromatin remodeling, RNA processing, and the influence of non-coding RNAs play significant roles in regulating gene expression.
Are changes in chromatin structure and histone DNA binding associated with gene activity?
yes
When the DNA in a cell is uncoiled and spread throughout the nucleus it is called?
When the DNA in a cell is uncoiled and spread throughout the nucleus, it is called chromatin. Chromatin consists of DNA and associated proteins that help organize and regulate gene expression within the cell.
What is the name of the family of DNA binding proteins that function to package DNA into chromatin?
histones are the proteins that compact and order DNA into subunits in the first step of the making of chromatin
What is mean by chromatin reticulum?
Chromatin reticulum refers to the network of interconnected chromatin fibers found in the nucleus of a cell. These fibers are involved in packaging and organizing the genetic material within the nucleus. The chromatin reticulum plays a role in regulating gene expression and maintaining the structural integrity of the nucleus.
Is RNA found with chromatin?
Yes, RNA can be associated with chromatin in the cell. RNA molecules interact with chromatin proteins to regulate gene expression and chromatin structure. This interaction plays a crucial role in various cellular processes such as transcription, RNA processing, and epigenetic regulation.
