Bacteria Apr 2026

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

A tangled loop of DNA that contains their genetic instructions. bacteria

Your body hosts trillions of bacteria that help digest food, produce vitamins (like B and K), and train your immune system. Bacteria are among the oldest and most successful

A small percentage of bacteria are that cause disease by releasing toxins or damaging tissues. Famous examples include E. coli , Streptococcus , and Staphylococcus . These are typically treated with antibiotics , which work by disrupting the bacteria's ability to build cell walls or reproduce. 4. Evolution and Resistance Anatomy and Structure A tangled loop of DNA

We use bacteria to make food (yogurt, cheese, sauerkraut), treat sewage, and even produce medicines like insulin. 3. The Bad: Pathogens

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