tRNA’s wobble i.e. they don’t only just translate codons for which they are perfectly matched but also some that are a little off Question 29 options: TrueFalse
Added by Christopher S.
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tRNA (transfer RNA) is responsible for bringing the correct amino acids to the ribosome during protein synthesis, matching them to the corresponding codons on the mRNA (messenger RNA). Show more…
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Which of the following statements about the wobble hypothesis is correct? a. Some tRNAs can recognise codons that specify two different amino acids. b. Wobble occurs only in the first base of the anticodon. c. The presence of inosine within a codon can introduce wobble. d. Each tRNA can recognise only one codon.
Sri K.
The existence of 64 different codon triplets and 20 different amino acids is reconciled in the cell by: A. failure to use most of the available triplets as mRNA codons. B. wobble in which the 3' nucleotide of the anticodon can pair loosely with the codon. C. wobble in which the 5' nucleotide of the anticodon can pair loosely with the codon. D. an aminoacyl-tRNA synthetase that recognizes over 60 different tRNAs. E. the cell has not figured this one out yet.
To maintain a uniform diameter of the DNA double helix, only purines base-pair with each other via two hydrogen bonds while only pyrimidines base pair with each other via three hydrogen bonds: True False Different patterns of activator and repressor binding to the enhancer and silencer sequences, respectively, in regulatory regions of individual genes create different combinations of on-off states of expression, leading to the development of different cell types in multicellular organisms. True False Release Factors (RFs) that operate in Translational Termination are specialized tRNA molecules with anticodons that specifically base-pair with STOP codons. True False Transcriptional Termination generally will include the transcription of an inverted repeat in mRNA that forms a "hairpin" which destabilizes RNA Polymerase's interaction with DNA. True False tRNA is considered the adaptors that perform the actual translation from the nucleotide "language" into the amino acid "language". True False
Madhur L.
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