Question

In a typical prokaryotic cell, explain the structure 7 function of following: 1) plasma membrane 2) Capsule 3) Mesosomes 4) Flagellum 5)Pili fimbriae

Answer 1

1.The plasma membrane  lets specific molecules to move across it. 
2.Capsule  serves to glue cells together
3.Mesosomes come about as expansions of plasma membrane into the cytoplasm of the cells that are deficient in distinct cell nucleus.
4.Flagella are firm  extensions that resemble tails
5.Pili fimbriae are small protein attachments which attach microorganisms to the exteriors

Answer 2

Answer:

1) Plasma Membrane: The cell membrane surrounds the cell's cytoplasm and regulates the flow of substances in and out of the cell.

2)Capsule: It is an outer protective covering found in the bacterial cells, in addition to the cell wall. It helps in moisture retention, protects the cell when engulfed, and helps in the attachment of cells to nutrients and surfaces.

3) Mesosomes: They are extensions of the plasma membrane into the cell in the form of tubules or lamella. They help with the following functions

1.Cellular respiration and secretion.

respiration and secretion.2.Increase the surface area of the plasma membrane and enzymatic content.

respiration and secretion.2.Increase the surface area of the plasma membrane and enzymatic content.3.Cell wall formation.

respiration and secretion.2.Increase the surface area of the plasma membrane and enzymatic content.3.Cell wall formation.4.DNA replication and distribution of genetic material

respiration and secretion.2.Increase the surface area of the plasma membrane and enzymatic content.3.Cell wall formation.4.DNA replication and distribution of genetic material to daughter cells.

4) Flagella: Some bacteria have extensions coming from their cell wall called flagella that help them move. A single flagellum has three parts – basal body, hook and filament.

5)Pili: Long tubular structures

Only in Gram-negative bacteria.

Help in transfer of genetic material between cells.

fimbriae: Short, bristle-like structures

In both, Gram-positive and negative bacteria

Help bacteria attach to surfaces.

Explanation:

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