(2 pts) Discontinuous replication means thatA. DNA synthesis begins at multiple origins of replication
B. DNA synthesis starts and stops many times before being completed
C. DNA synthesis is not continuous with RNA synthesis
D. One of the daughter strands of a replicated piece of DNA is made in short fragments that are joined togetherAnswers seen: A (3), B (5), C (1), D (54)9.
C. DNA synthesis might take longer, but otherwise there would be no noticeable difference.
D. DNA synthesis would not occur, as the entire length of the chromosome would have to be unwound before both strands could be replicated in a discontinuous fashion.
Compared with RBC, the structure of eukaryocyte was more complicated. Considering various physiological functions of eukaryocyte, it's meaningful to develop some biomimetic particles based on the eukaryocyte membrane to realize some different functions[, ]. The general preparation step is close to that of RBCm-coated NPs, but a bit more complicated in detail. The eukaryocyte membranes can be collected by ultracentrifugation through a discontinuous sucrose density gradient after hypotonic treatment. Then the membrane-coated structure was fabricated after co-extrusion or incubation with the cores. The components from nucleus, organelle and cytosol were found to be low on the formulated NPs, which may reduce the genetic risk of the technology, especially in the case of taking some pathological cells as the membrane source.