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Questions
List two essential roles of ribosomes during translation.
State the function of ribosomes as a catalyst in bacteria during the process of translation.
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Solution
- They provide a surface for binding of mRNA in the groove of the smaller subunit of ribosomes.
- As a larger subunit of the ribosome has peptide transferase on its ‘P’ site, it helps in joining amino acids by forming peptide bonds.
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RELATED QUESTIONS
Which one of the following is a stop codon?
(a) UAG
(b) UAC
(c) AUG
(d) UCA
Briefly describe the following:
Translation
An operon is a ______.
The process of translation is ______.
The translation termination triplet is ______.
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UTRs are the untranslated regions present on ______.
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(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 does initiation of the translation process occur in prokaryotes? Explain.
Anticodon loop of tRNA has ______.
Codon on mRNA and anticodon on tRNA are ______.
How many different proteins does the ribosome consist of?
What is a triplet codon?
Which molecule acts as the template for translation?
Which of the following is the start codon in translation?
What are the three stop codons that signal the termination of translation?
Which enzyme is responsible for activating amino acids and attaching them to the correct tRNA?
During the elongation stage of translation, what ensures that the correct amino acid is placed in the sequence?
Which ribosomal site receives the incoming aminoacyl-tRNA during translation?
During elongation, what bonds are formed between adjacent amino acids?
What energy molecules are required during translation?
