Microbial Growth and Its Control - Binary Fission, Budding, and Biofilms

11 important questions on Microbial Growth and Its Control - Binary Fission, Budding, and Biofilms

What is binary fission?

Binary fission is the process of cell division in prokaryotes. Cells elongate to twice their original length and then form a partition that constricts the cell into two daughter cells.

What is a septum?

The partition that forms between dividing cells that results from the inward growth of the cytopsmic membrane and cell wall from opposing directions.

What is the generationt time?

The time required for one generation to occur (the formation of two daughter cells). Generation time depends on nutritional and genetic factors, and on temperature.
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What leads to the separation of the chromosomes to one to each daugther cells?

Constriction

What is a difference between budding bacteria and bacteria that divide by binary fission?

The difference between budding division and binary fission is the formation of new cell wall material from a single point (polar growth) in budding division rather than through the whole cell (intercalary growth) as in binary fission.

What is budding division?

Cell division that forms a totally new daughter cell, with the mother cell retaining its original identity. Polar growth occurs (formation of new cell wall material from a single point).

What is a consequence and an advantage of polar growth?

Large cytoplasmic structures are not partitioned during the cell division process and must be formed de novo in the developing bud. This has the advantage that more complex internal structures can be formed in budding cells that divide by binary fission.

What is sessile growth?

Microorganisms that grow attached to a surface. These cells can develop into biofilms.

What is planktonic growth?

Microorganisms that can grow in suspensions.

What is a biofilm?

An attached polysaccharide matrix containing embedded bacterial cells. They are a common growth form for bacteria in nature, because the intensely interwoven nature of the structure prevents harmful chemicals from penetrating.

What are microbial mats?

Biofilms with multilayered sheets with different organisms present in the individual layers.

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