Ch. 1 Vocab Flashcards
Smallest unit of life
CELL
A group of similar cells that perform a particular function.
TISSUE
Several tissues join together to form an…
ORGAN
Organs work together to form an…
ORGAN SYSTEM
An individual;complex individuals contain organ systems
ORGANSISM
Organisms of the same species in a particular area
POPULATION
Interacting populations in a particular area
COMMUNITY
A community plus the physical environment
ECOSYSTEM
Regions of the earths crust waters and atmosphere inhabited by living organisms
BIOSPHERE
Smallest unit of an element; composed of electrons, protons, and neutrons
ATOM
Union of two or more atoms of the same or different elements
MOLECULE
The structural and functional unit of all living organisms
CELL
A group of cells with a common structure and function
TISSUE
Composed of tissues functioning together for a specific task
ORGAN
Composed of several organs working together
ORGAN SYSTEM
The capacity to do work
ENERGY
Unit of information within an individual’s DNA
GENES
The process by which organism makes more of itself
REPRODUCTION
The requirement that organisms maintain a relatively constant internal environment.
HOMEOSTASIS
Increase in size or number of cells
GROWTH
Changes that take place from conception to death
DEVELOPMENT
Features that make individual organisms better suited to the new environment.
ADAPTATION
The differential reproductive success of adapted individuals
NATURAL SELECTION
The change in frequency of traits in populations and species
EVOLUTION
