biology

9 articles · All tags

• Mitosis vs Meiosis: Differences, Stages, and Purpose
  Mitosis makes two identical cells for growth and repair; meiosis makes four genetically different sex cells. Compare their stages, results, and why both matter.
• Tardigrades: The Almost Indestructible Water Bears
  Water bears: millimetre-long tardigrades survive space vacuum, extreme radiation, freezing and years of drought by entering a dormant state called cryptobiosis.
• Circadian Rhythm Reset: How the Master Clock Works
  The biology of the circadian system — the suprachiasmatic nucleus, melatonin, and zeitgebers — and how each signal can be used to shift your internal clock deliberately.
• The Deep Ocean
  The largest habitat on Earth begins below 200 meters: permanent darkness, crushing pressure, food scarcity, and the strange adaptations that make life there possible.
• Bioluminescence
  How living organisms produce cold light through luciferin-luciferase chemistry, why most glowing things live in the deep ocean, and how biologists borrowed the reaction.
• Natural Selection
  The evolutionary mechanism by which heritable traits that improve survival and reproduction become more common in a population over generations.
• Ecological Succession
  The directional change in species composition of a community over time after disturbance or on newly exposed substrate.
• Mendelian Inheritance
  The patterns of trait transmission discovered by Gregor Mendel: segregation and independent assortment of alleles.
• Homeostasis
  How the body keeps its internal environment stable — temperature, pH, glucose, and more — through negative feedback loops.