From The Student Room

TSR Wiki > Study Help > Subjects and Revision > Revision Notes > Biology > Prokaryotic Cells

Draw a generalised prokaryotic cell as seen in electron micrographs

=State one function for each of the following

State one function for each of the following: cell wall, plasma membrane, mesosome, cytoplasm, ribosomes and naked DNA.

Cell wall: Maintains the shape of the cell.

Plasma membrane: Selective membrane that keeps the amount of oxygen and other particles that enter and leave the cell.

Mesosomes: Increases the cell surface area for metabolic reactions to occur.

Cytoplasm: Keeps the organelles of specialized functions.

Ribosomes: The main site for protein synthesis.

Naked DNA (nucleoid): Contain the inherited information that control the cell and its genotype.

State that prokaryotes show a wide range of metabolic activity

State that prokaryotes show a wide range of metabolic activity including fermentation, photosynthesis and nitrogen fixation.

Comments