Biology Dictionary

  • Desmosome

    Desmosome

    A structure in animal cells that helps anchor cells to each other, providing mechanical strength to tissues.

  • Desynapsis

    Desynapsis

    The separation or loss of synaptic connections between neurons or other cells during development or injury.

  • Detergent

    Detergent

    A chemical substance used for cleaning, often by breaking down grease, dirt, and oils.

  • Determinate growth

    Determinate growth

    A type of growth in which an organism or structure reaches a set size or shape and stops growing once it reaches that size.

  • Determination

    Determination

    The process by which a cell or organism commits to a specific developmental fate, often referring to the specialization of cells.

  • Dendrology

    Dendrology

    The branch of botany that deals with the study of trees, including their identification, classification, and ecological roles.

  • Dengue

    Dengue

    A viral infection transmitted by mosquitoes, causing symptoms such as fever, joint pain, and in severe cases, hemorrhagic fever.

  • Denitrifying bacteria

    Denitrifying bacteria

    Bacteria that convert nitrates in the soil to nitrogen gas, playing a key role in the nitrogen cycle by reducing excess nitrogen.

  • Density

    Density

    The mass per unit volume of a substance, often used to describe how tightly packed the molecules of a material are.

  • Density gradient centrifugation

    Density gradient centrifugation

    A laboratory technique used to separate components of a mixture based on their density by spinning the sample at high speed.