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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 switched other genes on or of
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उत्तर
An operon is a cluster of structural genes with related functions.
संबंधित प्रश्न
Which one of the following is a stop codon?
(a) UAG
(b) UAC
(c) AUG
(d) UCA
Briefly describe the following:
Translation
The three codons which result in the termination of polypeptide chain synthesis are ______.
Which of the following life processes is evolved around RNA?
UTRs are the untranslated regions present on ______.
Which cellular process is shown below?
Which of the following are correct statements for a tRNA molecule?
- It is an adapter molecule.
- Previously called sRNA (soluble RNA)
- tRNA has a codon loop that has bases complementary to the code,
- it also has an amino acid accepter end to which it binds to amino acids.
- It is non-specific for each amino acid.
The first phase of translation is ______
(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?
Explain the process of aminoacylation of tRNA and its role in the process of translation.
