Biology 101 Chapter 1

The scientific study of life

Fundamental building block of all matter

All regions of Earth where organisms live

Smallest unit of life

All populations of all species in a given area

A community interacting with its environment

A characteristic of a system that does not appear in any of the system's component parts. 

An association of two or more atoms

In multicelled organisms, a grouping of tissues engaged in a collective task

In multicelled organisms, set of organs engaged in a collective task that keeps the boy functioning properly

Group of interbreeding individuals of the same species that live in a given area

In multicelled organisms, specialized cells organized in a pattern that allows them to perform a collective function

Organism that gets energy and nutrients by feeding on tissues, wastes, or remains of other organisms

Multistep process by which the first cell of a new individual becomes a multicelled adult

Deoxyribonucleic acid; carries hereditary information that guides development and functioning

The capacity to do work

In multicelled species, an increase in the number, size, and volume of cells

Set of processes by which an organism keeps its internal conditions within tolerable ranges

Transmission of DNA to offspring

Substance that an organism needs for growth and survival, but cannot make for itself

Process by which producers use light energy to make sugars from carbon dioxide and water

Organism that makes its own food using energy and simple raw materials from the environment

Processes by which individuals produce offspring

Multicelled consumer that develops through a series of stages and moves about during part or all of its life cycle

Member of a group of single-celled organisms that lack a nucleus but are more closely related to eukaryotes than to bacteria

Member of the most diverse and well-known group of single-celled organisms that lack a nucleus

Scope of variation among living organisms

Organism whose cells characteristically have a nucleus

Single-celled or multicelled eukaryotic consumer that digests material outside its body, then absorbs released nutrients

Double-membraned sac that encloses a cell's DNA

A multicelled, typically photosynthetic producer

Member of a diverse group of simple eukaryotes

A group of species that share a unique set of traits; also the first part of a species name

Unique type of organism

Second part of a species name

A group of organisms that share a unique set of features

The science of naming and classifying species

An observable characteristic of an organism or species

In an experiment, a group of individuals who are not exposed to the independent variable being tested

Judging information before accepting it

Experimental results

Using a general idea to make a conclusion about a specific case

In an experiment, a variable that is presumably affected by the independent variable being tested

A test designed to support or falsify a prediction

In an experiment, group of individuals who are exposed to the independent variable

Testable explanation of a natural phenomenon

Variable that is controlled by an experimenter in order to explore its relationship to a dependent variable. 

Drawing a conclusion based on observation

Analogous system used for testing hypothesis

Statement, based on a hypothesis, about a condition that should exist if the hypothesis is correct

Systematic study of the observable world

Making, testing, and evaluating hypotheses

In an experiment, a characteristic or event that differs among individuals or over time

The chance that a particular outcome of an event will occur; depends on the total number of outcomes possible

Difference between results derived from testing an entire group of events or individuals, and results derived from testing a subset of the gorup

Refers to a result that is statistically unlikely to have occurred by chance

Generalization that describes a consistent natural phenomenon for which there is incomplete scientific explanation

Hypothesis that has not been disproven after many years of rigorous testing