Pseudomonas aeruginosarepresents a well-studied model organism for single-species biofilm formation. This research is also of direct medical significance because of the propensity of these bacteria to form biofilms in the Lungs of patients with cystic fibrosis.

true or false?

True.

Explanation:

Pseudomonas aeruginos is a gram negative bacteria that can cause Infections in human bodies when there is favourable condition. It is found in the environment.

It cause chronic biofilm infection in the lungs of Cystic fibrosis patients. The matrix of the biofilm is the alginate which is a polysaccharide and it is the major cause of lung damage in Cystic fibrosis patients.

The growth of the biofilm in the Cystic fibrosis patients is due to constant change in DNA, slower growth and favourable conditions that help the bacteria to survive.

prophase: we can observe the chromosomes to coil up and condense. they become visible. nuclear membrane and envelope disintigrate.s

metaphase: chromosomes align at the center, the metaphase plate. spindle fibers attach to centromeres of the sister chromatids. they meet at kinetochores.

anaphase: sister chromatids are pulled towards each opposing centromere, set on different poles.

telophase: chromosomes are now clustered up only on either sides of the cell. nuclear membranes reform, and a new cell wall forms along the cell plate. this will lead to cytokinesis, the process that divides the cell membrane and forms the cell wall.

the correct answer is 4) heat and pressure

metamorphic rocks arise from transformation of existing rocks types, in a process called metamorphism. during metamorphism the original rock(prolith) change into metamorphic rock by heating (150-200c) and pressure of more than 1000 bar. the original rock can be sedimentary, igneous, or existing metamorphic rock.