How much do they depend on their host cell for biochemical machinery? bacterial cells do, and although the DNA replication strategies are a little different , Some proteins are encoded by organelle DNA and synthesized in the organelle. of proliferating eukaryotic cells even in the complete abce of its own genome.
Mitosis: Splitting Up is Complicated - Crash Course Biology #12
Chapter 3. The Cellular Level of Organization 18 3. The nucleus is generally considered the control center of the cell because it stores all of the genetic instructions for manufacturing proteins. Interestingly, some cells in the body, such as muscle cells, contain more than one nucleus Figure 2 , which is known as multinucleated.
How do mitochondria replicate and segregate? Mitochondrial segregation to daughter cells is also stochastic. Mitochondria must be duplicated during the cell cycle and segregated to the daughter cells. We understand some of the mechanics of this process, but not its regulation. At each stage in the duplication of mitochondria — DNA replication, DNA segregation to duplicate mitochondria, organelle segregation to daughter cells — the process appears to be stochastic, governed by a random distribution of each copy for review see 2288.
DNA Topology, Melting DNA and Organelle DNA
If mitochondria and chloroplasts contain their own DNA, what controls their rate of replication? How much do they depend on their host cell for biochemical machinery? Question Date. 2001-03-25 Answer 1. An excellent question. Mitochondria divide by simple fission, splitting in two just as bacterial cells do, and although the DNA replication strategies are a little different, forming displacement or D-loop structures, they partition their circular DNA in much the same way as do bacteria.