ASU BIO 181 EXAM 2 MODULES 7-12 PRACTICE QUESTIONS WITH CORRECT ANSWERS

Which strand is produced more rapidly? Leading strand During DNA replication in the lagging strand there is production of this component? Okazaki fragment How many "stop" codons exist? 3 The double helix of DNA is wrapped about 1¾ times around which of these components? Nucleosome Which enzyme unwraps the double helix? Helicase In the ribosome, what is the name of the bond that links one amino acid to the next? peptide bonds List the two basic categories of nitrogenous bases in nucleic acids. purine and pyrimidine In DNA, what does the nucleotide labeled as A pair with? Thymine During DNA replication is greatly reduced by enzymes that proof read the newly replicated DNA. True How many hydrogen bonds are there between an A and its paired nucleotide? 2 During mRNA maturation what is the name of the part of the mRNA that is removed? introns DNA replication in eukaryotes is sped up by multiple origins of replication. true RNA synthesis, also called RNA transcription occurs in three phases. List them from beginning to end in order. initiation, elongation, termination Which nucleotide is different in RNA compared to DNA? uridine