Bacteria Page

Bacteria are nature’s recyclers. They break down dead organic matter and "fix" nitrogen in the soil, which plants need to grow.

Bacteria are among the oldest and most successful life forms on Earth. These single-celled microorganisms are found everywhere—from deep-sea hydrothermal vents to the human gut—and play a critical role in maintaining the planet's ecosystems. 1. Anatomy and Structure bacteria

Tail-like structures for swimming and hair-like structures for sticking to surfaces. 2. The Good: Essential Life Support Bacteria are nature’s recyclers

A tangled loop of DNA that contains their genetic instructions. strep throat). Bacilli: Rods (e.g.

Unlike animal or plant cells, bacteria are . They lack a nucleus and membrane-bound organelles. Their structure typically includes:

A protective layer made of peptidoglycan (a mix of sugars and amino acids).

Bacteria reproduce through (splitting in two). Because they reproduce so quickly—some species every 20 minutes—they evolve rapidly. This has led to the global challenge of antibiotic resistance , where "superbugs" evolve defenses against the drugs designed to kill them. 5. Shapes and Classification Scientists often classify bacteria by their shape: Cocci: Spheres (e.g., strep throat). Bacilli: Rods (e.g., anthrax). Spirilla: Spirals (e.g., cholera).