Select all of the following statements that describe the activity of a proteasome:
Proteasomes phosphorylate various regulators of translation.
Proteasomes degrade protein molecules.
Proteasomes recognize ubiquitin-tagged proteins.
Proteasomes regulate gene expression at the transcriptional level.
Proteasomes regulate gene expression at the post-translational level.
Proteasomes assist the ribosome in binding to the mRNA template
Answer
The proteasome is a structure which is responsible for the degradation of cellular protein for various cellular activity, so following are the statements that apply regarding proteasomes
Proteasomes degrade protein molecules.
Proteasomes recognize ubiquitin-tagged proteins
Proteasomes regulate gene expression at the post-translational level
Select all of the following statements that describe the activity of a proteasome: Proteasomes phosphorylate various...
Which of the following mechanisms to regulate gene expression are observed in eukaryotes, but are not generally observed in prokaryotes? Choose all that apply. Genes are grouped into operons, which allows transcriptional regulation to turn them all on together. RNA silencing selectively targets mRNA and destroys it to prevent further translation. Proteins can be activated or deactivated as a form of post-translational regulation. Epigenetic regulation can open or condense sectiosn of a chromosome, regulating which genes are transcribed. Regulatory proteins...
Both prokaryotes and eukaryotes regulate gene expression, turning genes on and off in response to various cues. Which of the following mechanisms is common to both types of cells? Choose all that apply. alternative splicing of mRNA opening or condensing chromatin transcriptional regulation post-translational regulation
QUESTION 25 The concentration of mitotic cyclin ____________________. A. is highest in G1 phase B. decreases at the end of M phase as a result of ubiquitylation and degradation C. decreases at the prophase D. is controlled by phosphorylation QUESTION 26 Which of the following statements about the ubiquitin-proteasome pathway is false? A. Proteases, which reside in the central cylinder of a proteasome, degrade the ubiquitin-modified protein. B. Ubiquitin is a small protein that is non-covalently attached to proteins to...
I need help with question 24. The answer is D. Thanks
for any help in advance.
pie A) the stimulation of translation by initiation factors. B) a post-transcriptional mechanism to regulate mRNA C) transcriptional control of gene expression. (D) post-translational control that activates certain proteins. E) a eukaryotic equivalent of prokaryotic promoter functioning. 24) If you were to observe the activity of methylated DNA, you would expect it to Al be unwinding in preparation for protein synthesis. B) induce protein...
Regulation of Gene Expression in Eukaryotes In eukaryotes, the Central Dogma of Genetics can be expanded to include post-transcriptional processing and post-translational processing, thus the Dogma becomes: Replication - Transcription Post-transcriptional Processing -Translation - Post-translational Processing - Functional Protein - Expressed Trait. This is the flow of information from the genetic material to the actual physical, chemical or behavioral trait in an organism. Of course, some traits are controlled by multiple genes and some also have an environmental component. At...
I need help with question 23. The answer is C. Thanks
for any help in advance.
JUTTU TIL II Hing. UNA methylation, and histone acetylation are all ex Alkaryotypes B) translocation. 6) genetic mutation. Depigenetic phenomena. E) chromosomal rearrangements. 23) The functioning of enhancers is an example of A) the stimulation of translation by initiation factors. B) a post-transcriptional mechanism to regulate mRNA. C) transcriptional control of gene expression. Dpost-translational control that activates certain proteins. E) a eukaryotic equivalent of...
Each statement describes a type of gene regulation. Determine if it describes regulation at the transcription, translation or post-translation level. 1. Genetic regulatory proteins bind to the DNA. Transcription / Posttranslation / Translation 2. A transcription terminator forms in the RNA. Transcription / Translation / Posttranslation 3. Repressor proteins bind to an mRNA and prevent ribosome binding.Translation / Posttranslation / Transcription 4. Riboswitches produce an RNA conformation that prevents ribosome binding. Posttranslation/ Translation/ Transcription 5. Antisense RNA binds to the...
Choose two (2) of the mechanisms of gene expression regulation in eukaryotic cells denoted by rows shown (7 possible in the Figure below. I will only grade your first to for completeness and will NOT grade any more that you write. If you do an EXTRAODINARY job on your answers, you may ear bonus points For each of your choices answer the following 4 questions using COMPLETE sentences 1. What are the base structural differences between molecules (pink, blue or...
not sure what the correct answers are
To be export-ready, an mRNA molecule must: have its 5' cap removed be bound by EJCS have its poly-A tail removed have at least half of its introns removed od 80e covou The extension temperature used during PCR is determined by: the length of the PCR product you want to generate the DNA polymerase that is being used the annealing temperature of your primers x the source of your template DNA (eg, genomic...
answer all the questions
18) A mutation occurs such that a spliceosome cannot remove one of the introns in a gene. What effect will this have on the gene? Translation will continue, but a nonfunctional protein will be made b) Translation will continue and will skip the intron sequence c) It will have no effect; the gene will be transcribed and translated into protein d) Transcription will terminate easily and the protein will not be made 19. During the process...