Bacterial cells need to tightly regulate DNA replication so that replication does not initiate multiple times before cell divisi
on occurs. The cells use several methods to regulate the initiation of DNA replication. In order for replication to initiate which of the following needs to occur?
There must be an ORI (origin point) and from there the cell needs several enzymes such as helicase, SSB and more.
Explanation:
Bacteria are a different type of cell called Prokaryotic. These kind of cells are special because their genetic material doesn't have a membrane, so it's tight but disperse in the cell. As the genetic material is, almost, a circle, the replication has to begin in one only point, that is called, the <em>ORI. </em>This ORI is a fragment of DNA that contains a sequence (or a code) that tells the DNA-Polymerase where to begin the replication. This is important because the cell only replicates when it's time to divide, otherwise the energy that this process takes will be wasted. When the ORI is detected the Helicase starts to separate the two brands and the SSB's start to surround them so they don't bind together again.
This statement is true. To be more specific, the calcium ions bind to the troponin, which are attached to the protein tropomyosin. The tropomyosin then to shifts to expose the actin filaments to which myosin heads need to bind to produce contraction.
