Biology Section 1-3

Science that seeks to understand the living world.

Collection of living matter enclosed by a berrier that separates the cell from its surrounding; basic unit of all forms of life. -Smallest functional unit of life

Process by which two cells from different parents unite to produce the first cell of a new organism.

Process by which a single parent reproduces by itself.

Set of chemical reactions through which an organism builds up or breaks down materials as it carries out its life processes.

Process by which organisms maintain a relatively stable internal environment.

Change in a kind of organism over time; process by which modern organisms have descended from anciet organisms.

-living things made up of units called cells -living things reproduce -living things based on a universal genetic code -living things grow and develop -living things obtain and use materials and energy -living things respond to their environment -living things maintain a stable internal evironment -Taken as a group, living things change over time

Molecules, cells, organisms, populations of a single organism, communities of populations living in the same area, and the biosphere

Groups of atoms; smallest unit of most chemical compounds

Tissues, organs, and organ systems

Individual living thing

Group of organisms of one type that live in the same area

Populations that live together in a defined area

Community and its nonliving surroundings