Cells that use the amino acids selenocysteine and pyrrolysine have
A)two more codons compared to other cells.
B)two more tRNAs compared to other cells.
C)two more aminoacyl-tRNA synthetases compared to other cells.
D)two more tRNAs and aminoacyl-tRNA syntheses compared to other cells.
E)inosine at the third position of their tRNA anticodons to accommodate these amino acids.

Question

Quizplus · Accepted Answer

Cells that incorporate selenocysteine and pyrrolysine into their proteins require two additional tRNAs and two additional aminoacyl-tRNA synthetases to recognize and attach these unique amino acids to their respective tRNAs.

Cells That Use the Amino Acids Selenocysteine and Pyrrolysine Have