Enzyme
A class of proteins serving as catalysts, chemical agents that change the rate of a reaction
without being consumed by the reaction.
Eocene
Belonging to the geologic time, rock series, or sedimentary deposits of the second epoch of
the Tertiary Period, characterized by warm climates and the rise of most modern
mammalian families.
Eoplasts
Any of several pigmented cytoplasmic organelles found in plant cells and other organisms,
having various physiological functions, such as the synthesis and storage of food.
Epiblast
The outer layer of a blastula that gives rise to the ectoderm after gastrulation.
Epiblema
The epidermal cells of rootlets, specially adapted to absorb liquids. Goodale.
Epicuticular waxes
The epicuticle is the outermost portion of the exoskeleton of an insect (and various other
arthropods); its exact composition and structure may differ somewhat among different taxa,
but certain aspects can be generalized:
It is secreted by the epidermis, and is deposited on top of the procuticle via pores that pass
outwards through the procuticle from the epidermal cells.
Epidermis
(1) The dermal tissue system in plants.
(2) The outer covering of animals.
Epidermal
pertaining to the epidermis; epidermic; cuticular.
Epigenesis
The progressive development of form in an embryo.
Epididymis
A long coiled tube into which sperm pass from the testis and are stored until mature and
ejaculated.
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