Question 1
Significant in the deciphering of the genetic code was the discovery of the enzyme polynucleotide phosphorylase. What is this enzyme used for?
◦ manufacture of synthetic RNA for cell-free systems
◦ peptide bond formation
◦ production of ribosomal proteins
◦ ribosomal translocation
◦ degradation of RNA
Question 2
In 1964, Nirenberg and Leder used the triplet binding assay to determine specific codon assignments. A complex of which of the following components was trapped in the nitrocellulose filter?
◦ sense and antisense strands of DNA
◦ ribosomes and DNA
◦ uncharged tRNAs and ribosomes
◦ free tRNAs
◦ charged tRNA, RNA triplet, and ribosome