#Question id: 4232
#Unit 3. Fundamental Processes
Once researchers identified DNA as the molecule responsible for transmitting heritable traits, they asked how information was transferred from the DNA in the nucleus to the site of protein synthesis in the cytoplasm. Which of the following statements correctly describes the mechanism of information transfer in eukaryotes that accomplishes this task?
#Question id: 4233
#Unit 3. Fundamental Processes
A particular triplet of bases in the coding sequence of DNA is AAA. The anticodon on the tRNA that binds the mRNA codon is __.
#Question id: 4234
#Unit 3. Fundamental Processes
Accuracy in the translation of mRNA into the primary structure of a polypeptide depends on specificity in the __.
#Question id: 4235
#Unit 3. Fundamental Processes
What would be the consequence of a mutation in a bacterial cell that produces a defective aminoacyl-tRNA synthetase that attaches a lysine instead of the normal phenylalanine to tRNAs with the anticodon AAA?
#Question id: 4236
#Unit 3. Fundamental Processes
In bacteria, there are 61 mRNA codons that specify an amino acid, but only 45 tRNAs. Which of the following statements explains this fact?
#Question id: 4237
#Unit 3. Fundamental Processes
A part of an mRNA molecule with the following sequence is being read by a ribosome: 5′-CCGACG- 3′ (mRNA). The following charged transfer RNA molecules (with their anticodons shown in the 3′ to 5′ direction) are available. Two of them can correctly match the mRNA so that a dipeptide can form. Which of the following dipeptides will form from this mRNA?