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  2. Biological system - Wikipedia

    en.wikipedia.org/wiki/Biological_system

    Biological organization spans several scales and are determined based different structures depending on what the system is. [1] Examples of biological systems at the macro scale are populations of organisms. On the organ and tissue scale in mammals and other animals, examples include the circulatory system, the respiratory system, and the ...

  3. Biological roles of the elements - Wikipedia

    en.wikipedia.org/wiki/Biological_roles_of_the...

    Has no known biological role, apart from medical use (antibiotic, mainly; also dental fillings). [11] Can produce a variety of toxic effects in humans and other animals; also toxic to various microorganisms. [11] sodium: 11: 5: Essential to animals and plants in many ways, such as osmoregulation and transmission of nerve impulses. [11]

  4. Cell (biology) - Wikipedia

    en.wikipedia.org/wiki/Cell_(biology)

    In animals, the plasma membrane is the outer boundary of the cell, while in plants and prokaryotes it is usually covered by a cell wall. This membrane serves to separate and protect a cell from its surrounding environment and is made mostly from a double layer of phospholipids , which are amphiphilic (partly hydrophobic and partly hydrophilic ).

  5. Plant–animal interaction - Wikipedia

    en.wikipedia.org/wiki/Plantanimal_interaction

    Plant-animal interactions are important pathways for the transfer of energy within ecosystems, where both advantageous and unfavorable interactions support ecosystem health. [ 1 ] [ 2 ] Plant-animal interactions can take on important ecological functions and manifest in a variety of combinations of favorable and unfavorable associations, for ...

  6. Organ system - Wikipedia

    en.wikipedia.org/wiki/Organ_system

    Vascular plants have two distinct organ systems: a shoot system, and a root system. The shoot system consists stems, leaves, and the reproductive parts of the plant (flowers and fruits). The shoot system generally grows above ground, where it absorbs the light needed for photosynthesis. The root system, which supports the plants and absorbs ...

  7. Living systems - Wikipedia

    en.wikipedia.org/wiki/Living_systems

    Complex systems biology is a field of science that studies the emergence of complexity in functional organisms from the viewpoint of dynamic systems theory. [20] The latter is also often called systems biology and aims to understand the most fundamental aspects of life.

  8. Plant physiology - Wikipedia

    en.wikipedia.org/wiki/Plant_physiology

    A germination rate experiment. Plant physiology is a subdiscipline of botany concerned with the functioning, or physiology, of plants. [1]Plant physiologists study fundamental processes of plants, such as photosynthesis, respiration, plant nutrition, plant hormone functions, tropisms, nastic movements, photoperiodism, photomorphogenesis, circadian rhythms, environmental stress physiology, seed ...

  9. Outline of biology - Wikipedia

    en.wikipedia.org/wiki/Outline_of_biology

    Plant physiology – subdiscipline of botany concerned with the functioning, or physiology, of plants. [1] Cell biology – study of the cell as a complete unit, and the molecular and chemical interactions that occur within a living cell. Histology – study of the anatomy of cells and tissues of plants and animals using microscopy.

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