#Question id: 3831
#Unit 3. Fundamental Processes
State whether the following statements is true/false regarding DNA replication.
1. In E. coli replication begins at the origin of replication and proceeds in one direction until the entire circular DNA molecule has been copied.
2. The chromosome of the fruit fly (D. melanogaster) is about twice as large as the E. coli chromosome.
3. Prokaryotic DNA replication occurs in two steps. First, ATP provides a phosphate to the growing DNA chain. This is followed by addition of a nucleoside.
4. DNA polymerase III is the largest DNA polymerase in E. coli.
5. The β subunits of E. coli DNA polymerase form a sliding clamp that surrounds the DNA strands at the replication fork.
#Question id: 1108
#Unit 4. Cell Communication and Cell Signaling
Which of the following amino acids are most frequently phosphorylated by protein kinases in the cytoplasm during signal transduction?
#Question id: 3886
#Unit 3. Fundamental Processes
Which one of the following statements about the reverse transcriptases of retroviruses and the RNA replicases of other single-stranded RNA viruses, such as R17 and influenza virus, is correct?
#Question id: 5556
#Unit 5. Developmental Biology
Contact of a sea urchin egg with signal molecules on sperm causes the egg to undergo a brief ________.
#Question id: 12557
#Unit 10. Ecological Principles