The three basic shapes of bacteria. Introduction: Bacteria are unicellular prokaryotic microorganisms lacking the chlorophyll pigments. The cell structure of these organisms is simpler than that of the other organisms. They have no nucleus or membrane-bound organelles. The bacterial cell shape is primarily determined by a protein named MreB. Most bacteria have three major shapes, namely the rod or bacillus, the sphere or coccus, and the spiral type.

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Chapter 28.4, Problem 1CYP

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The three basic shapes of bacteria.

Introduction:

Bacteria are unicellular prokaryotic microorganisms lacking the chlorophyll pigments. The cell structure of these organisms is simpler than that of the other organisms. They have no nucleus or membrane-bound organelles. The bacterial cell shape is primarily determined by a protein named MreB. Most bacteria have three major shapes, namely the rod or bacillus, the sphere or coccus, and the spiral type.

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