A unit of length in the metric system, equal to one thousandth of a meter.

The sperm of fish and some other aquatic animals, used in fertilization.

The resemblance of one organism to another or to an object in the environment, which provides some advantage, often protection from predators.

A naturally occurring, inorganic solid substance with a specific chemical composition and structure.

The smallest quantity of a substance or the smallest unit of measure in a given context.

A type of growth medium that contains only the essential nutrients required for the growth of a specific organism.

An epoch of the Neogene period, occurring approximately 23 to 5.3 million years ago, characterized by the development of modern flora and fauna.

Describes substances that can mix together in any proportion without separating, such as water and ethanol.

A small vesicle derived from cell membranes, often used in biochemical research to study enzyme activity.

A small spherical particle, often used in experiments or as part of a molecular assembly.