Chapter 1 Flashcards
Chapter 1 Vocabulary - Sections 1.1, 1,2, 1.3
Atom
A basic unit of matter that cannot be broken down by normal chemical reactions.
Biology
The study of living organisms and their reaction with one another and their environments.
Biosphere
A collection of all ecosystems on Earth.
Cell
The smallest fundamental unit of structure and function in living things.
Community
A set of populations inhabiting a particular area.
Ecosystem
All living things in a particular area together with the abiotic, nonliving parts of that environment.
Eukaryote
An organism with cells that have nuclei and membrane-bound organelles.
Evolution
The process of gradual change in a population that can also lead to new species arising from older species.
Homeostasis
The ability of an organism to maintain constant internal conditions.
Macromolecules
A large molecule typically formed by the joining of smaller molecules.
Molecule
A chemical structure consisting of at least two atoms held together by a chemical bond.
Organ
A structure formed of tissues operating together to perform a common function.
Organ System
The higher level of organization that consists of functionally related organs.
Organelle
A membrane-bound compartment or sac within a cell
Organism
An individual living entity.
