#Question id: 3843
#Unit 3. Fundamental Processes
In DNA replication in E. coli, the enzyme primase is used to attach a 5 to 10 base ribonucleotide strand complementary to the parental DNA strand. The RNA strand serves as a starting point for the DNA polymerase that replicates the DNA. If a mutation occurred in the primase gene, which of the following results would you expect?
#Question id: 3844
#Unit 3. Fundamental Processes
The lagging strand is characterized by a series of short segments of DNA (Okazaki fragments) that will be joined together to form a finished lagging strand. The experiments that led to the discovery of Okazaki fragments gave evidence for which of the following ideas?
#Question id: 3845
#Unit 3. Fundamental Processes
The replisome, which synthesizes DNA on both leading and lagging strands, always moves toward the replication fork. This must mean that:
#Question id: 3846
#Unit 3. Fundamental Processes
A heat-sensitive DNA ligase (25°C permissive, 37°C nonpermissive) has been used to show that DNA synthesis is discontinuous. Examination of DNA replication in the presence of [3H]-thymidine in the mutant would demonstrate which of following?
#Question id: 3848
#Unit 3. Fundamental Processes
are small molecules that function as adapters between amino acids and codons.
#Question id: 3849
#Unit 3. Fundamental Processes
Which of the following is short 20 to 22-nucleotide single-stranded RNAs that block the expression of complementary or partially complementary mRNAs.