The majority of gene expression regulation in bacteria involves modulating which process?Question 18Answera.Translation initiationb.Transcription terminationc.mRNA degradationd.Transcription initiation
Question
The majority of gene expression regulation in bacteria involves modulating which process?Question 18Answera.Translation initiationb.Transcription terminationc.mRNA degradationd.Transcription initiation
Solution
The majority of gene expression regulation in bacteria involves modulating the process of Transcription initiation.
Here's a step-by-step explanation:
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Gene expression is the process by which the genetic code - the nucleotide sequence - of a gene is used in the synthesis of a functional gene product. It involves two main stages: transcription and translation.
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In bacteria, the regulation of gene expression can occur at any point in the process: DNA transcription into RNA, RNA processing, translation of RNA into protein, or post-translation modification of the protein.
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However, the majority of gene expression regulation in bacteria involves modulating the process of transcription initiation. This is the first step of transcription and it's where RNA polymerase binds to the DNA strand and begins to synthesize the RNA.
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By controlling this step, bacteria can effectively control the amount of protein that is produced. If transcription initiation is prevented or slowed down, then less RNA is produced, which in turn means less protein is produced. Conversely, if transcription initiation is sped up or made more efficient, then more RNA and thus more protein is produced.
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Therefore, the correct answer is d. Trans
Similar Questions
Describe genetic, post-transcription and post-translation regulation in bacteria
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Which of the following is NOT a form of gene regulation in eukaryotes?Group of answer choicesChanges to the DNA sequence that change the introns that are includedA small RNA binding to the mRNA from the gene and causing it to be degraded.Covalent modifications of DNA that keep the base pairing the sameBinding of proteins to the enhancers or silences to change the amount of mRNA produced
Translation of mRNA in bacterial cells begins when A. An amino acid is added to the C-terminus of a polypeptide chain B. The initiator fMet-tRNA binds to a free 30S ribosomal subunit C. Peptidyl transferase catalyzes transpeptidation between adjacent amino acids D. The ribosome disengages from mRNA
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