Biology Dictionary

  • Transpiration-cohesion theory

    Transpiration-cohesion theory

    A theory that explains how water is drawn up from the roots of plants to the leaves through capillary action, driven by the cohesion of water molecules and the loss of water vapor from the leaves.

  • Transport protein

    Transport protein

    A protein that assists in the movement of ions, small molecules, or larger macromolecules across cellular membranes.

  • Transport protein n. See carrier protein.

    Transport protein n. See carrier protein.

    A protein that facilitates the movement of substances across biological membranes, often referred to as a carrier protein.

  • Transposable element

    Transposable element

    A DNA sequence that can change its position within the genome, potentially causing mutations and altering the cell’s genetic identity.

  • Transposase

    Transposase

    An enzyme that catalyzes the movement of a transposable element within the genome by cutting and rejoining DNA sequences.

  • Triacylglycerols

    Triacylglycerols

    The most common form of fat storage in organisms, consisting of a glycerol molecule bound to three fatty acid chains.

  • Triassic period

    Triassic period

    The first period of the Mesozoic Era, lasting from about 252 to 201 million years ago, following the Permian and preceding the Jurassic.

  • Triceps

    Triceps

    A large muscle located at the back of the upper arm, responsible for extending the elbow joint.

  • Trichinosis

    Trichinosis

    A parasitic disease caused by consuming undercooked meat infected with *Trichinella* larvae, leading to symptoms such as fever, muscle pain, and gastrointestinal discomfort.

  • Trichloroacetic acid

    Trichloroacetic acid

    A strong organic acid used in chemical synthesis, skin treatments, and as a reagent in laboratory settings.