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प्रश्न
An operon is a ______.
विकल्प
Protein that suppresses gene expression.
Protein that accelerates gene expression.
Cluster of structural genes with related function.
Gene that switches other genes on or off
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उत्तर
An operon is a cluster of structural genes with related functions.
Explanation:
An operon is a functional unit of DNA that contains a cluster of genes that are transcribed together into a single mRNA strand. This arrangement allows the cell to regulate a set of proteins with related metabolic functions, such as the enzymes needed to break down lactose, simultaneously. It typically consists of a promoter, an operator, and the structural genes themselves.
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संबंधित प्रश्न
List two essential roles of ribosomes during translation.
Briefly describe the following:
Translation
The translation termination triplet is ______.
The three codons which result in the termination of polypeptide chain synthesis are ______.
During translation, activated amino acids get linked to tRNA. This process is commonly called as ______.
Which cellular process is shown below?
The first phase of translation is ______
Which of the following is true with respect to AUG?
(a) Identify the polarity of x to x’ in the diagram below and mention how many more amino acids are expected to be added to this polypeptide chain.
(b) Mention the codon and anticodon for alanine.
(c) Why are some untranslated sequences of bases seen in mRNA coding for a polypeptide? Where exactly are they present on mRNA?
How many different proteins does the ribosome consist of?
