Biology Dictionary

  • Zeatin

    Zeatin

    A type of plant hormone, a cytokinin, that promotes cell division and growth in plants.

  • Zebrass

    Zebrass

    A hybrid between a zebra and a horse, also called a zorse or zebroid.

  • Zebroid

    Zebroid

    A hybrid animal resulting from the mating of a zebra with another equid, such as a horse or donkey.

  • Zein

    Zein

    A class of alcohol-soluble proteins found in corn, used in food and industrial applications.

  • Zinc finger

    Zinc finger

    A domain within a protein that binds to zinc ions and facilitates interactions with DNA, RNA, or other proteins.

  • Zona pellucida

    Zona pellucida

    A glycoprotein layer surrounding the plasma membrane of an oocyte, playing a key role in fertilization.

  • Xylem vessel

    Xylem vessel

    A type of xylem tissue consisting of elongated cells that conduct water and nutrients in plants.

  • Xenograft

    Xenograft

    A tissue or organ transplant between individuals of different species, such as from animals to humans.

  • Xenon (Xe)

    Xenon (Xe)

    A noble gas used in various applications such as in lighting, medical imaging, and anesthesia.

  • Xeric

    Xeric

    Describing environments that are dry or have limited water availability, typically referring to plant habitats.