Question

27. Which of the following statements regarding tRNAs is INCORRECT? A. In the folded structure of a tRNA, the anticodon loop is located near the 3' end of the molecule. B. Highly conserved nucleotides de primarily in the "loops" rather than the "stems". C. All tRNAs have the same 3 base sequence at their 3 end. D. All tRNAs contain post-transcriptionally modified nucleotides. E. In most cells, tRNA molecules are relatively stable. 28. In the active site of DNA Pol III, a Cytosine in its imino tautomeric form basepairs with: OOFD 29. Shown below is the "UGX" box from the codon table, which contains the sole UGG Trp codon. The UGA stop codon is read by RF-2. What is the sequence of the anticodon for the tRNA that recognizes the Cys codons? UGU Cys UGCS UGA STOP UGG Trp А. АСА B. UCA C. CCA D. GCA E. ICA

can you guys please give me the correct answers and explain why?

Answer 1

27. A. the anitcodon loop is not located near the 3' end. its actually located at the opposite end of it.

28. A. cytosine forms a base pair with cytosine. cytosine can form 3 hydrogen bonds with guanine.

29. A. ACA is the sequence of the anticodon. each base has a specific partner Guanine always with Cytosine and Adenine always with Uracil