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Biological Evolution: Unity and Diversity: Microorganisms and Their Roles
Bacteria: Characteristics
Description
Bacteria Characteristics
Bacteria are among the simplest and most ancient life forms, yet they are incredibly diverse and essential to life on Earth. These unicellular organisms have a simple cell structure. Unlike plant and animal cells, they lack a nucleus and membrane-bound o...
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Transcript
Bacteria live almost everywhere—on land, in water, in the air, and even inside us.
Each bacterium is a tiny, single-celled organism visible only under a microscope. They come in three main shapes: rod, spherical, and spiral.
Although bacteria are simpler than your cells, they still contain similar components. They have cytoplasm, whi...
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