Pulmonary alveolus (plural: alveoli, from Latin alveolus, “little cavity”) is a hollow cavity found in the lung parenchyma, and is the basic unit of ventilation.
Amoeba: a type of cell or unicellular organism which has the ability to alter its shape, primarily by extending and retracting pseudopods.
Amnion: a membrane that closely covers the embryo when first formed.
Autophagy: consumption of the body’s own tissue as a metabolic process occurring in starvation and certain diseases.
Autogamy: self-fertilization, especially the self pollination of a flower.
Autogeny: a hypothetical organic phenomenon by which living organisms are created from nonliving matter.
To produce a stem (plants).
To blossom, form flower heads.
Biophysics: an interdisciplinary science that applies approaches and methods traditionally used in physics to study biological phenomena.
Biogenesis, the production of new living organisms or organelles.
Biochemistry, the study of chemical processes within and relating to living organisms.
Protoplasm, the living content of a cell that is surrounded by a plasma membrane.
The first sprouting of grass after the first rain.
Omasum: the muscular third stomach of a ruminant animal, between the reticulum and the abomasum.