how does bacteria reproduce in hosts?

Question

this is for my science project

Answer 1

Bacteria grow to a fixed size and then reproduce through binary fission, a form of asexual reproduction.

Binary fission begins with DNA replication. DNA replication starts from an origin of replication, which opens up into a replication bubble (note: prokaryotic DNA replication usually has only 1 origin of replication, whereas eukaryotes have multiple origins of replication). The replication bubble separates the DNA double strand, each strand acts as template for synthesis of a daughter strand by semiconservative replication, until the entire prokayotic DNA is duplicated.

Each circular DNA strand then attaches to the cell membrane, sometimes by a mesosome. The cell elongates, causing the two chromosomes to separate.

Cell division in bacteria is controlled by the septal ring, a collection of about a dozen proteins that collect around the site of division. There, they direct assembly of the division septum.

The cell membrane then invaginates (grows inwards) and splits the cell into two daughter cells, separated by a newly grown cell plate. This process is called cytokinesis.

Answer 2

simply by binary fission and often with the help of viruses(transduction,transformation etc)