Introduction to Biology

Supports, connects, or separates different types of tissues and organs in the body.

Responsible for body movement; contracts to produce motion.

Transmits electrical signals for rapid communication throughout the body.

Breaks down food and absorbs nutrients for energy.

Transports blood, oxygen, and nutrients throughout the body.

The scientific study of life, including its structure, function, growth, origin, evolution, and distribution.

Organization, metabolism, growth, adaptation, response to stimuli, reproduction, and homeostasis.

Living things are highly structured, from atoms to ecosystems.

The basic unit of life; all organisms are made of one or more.

States that all living things are composed of cells, the cell is the basic unit of structure and function, and all cells come from pre-existing cells.

Cells lacking a nucleus or other membrane-bound organelles.

Cells that have a nucleus and other membrane-bound organelles.

The study of heredity and the variation of inherited characteristics.

Molecule carrying genetic instructions for all living organisms.

Process producing two identical daughter cells.

Process producing four genetically different daughter cells (gametes).

Change in species' characteristics over time.

Survival and reproduction of better-suited organisms.

Changes in allele frequencies within a population.

Evolution of new species and higher taxonomic groups.

Process by which new species arise.

Group of individuals of the same species in the same area.

A group of interacting populations of different species.

Community of organisms and their physical environment.

Eukaryotic, multicellular autotrophs in the kingdom Plantae.

Tissue forming the outer protective layer of a plant.

Eukaryotic, multicellular heterotrophs in the kingdom Animalia.