The high degree of order within an organisms internal and external parts and in its with the living world.

The smallest unit that can perform all life's processes.

Organisms, such as bacteria, that are made up of one cell.

Organisms, such as humans or trees, that are made up of many cells.

Structures that carry out specialized jobs within an organ system.

Groups of cells that have similar abilities and that allow the organ to function.

Tiny structures that carry out functions necessary for the cell to stay alive.

The chemical compounds in organelles that provide physical structure and bring about movement, energy use, and other cellular functions.

The maintenance of a stable level of internal conditions even though environmental conditions are constantly changing.

The sum of all the chemical reactions that take in and transform energy and materials from the environment.

The formation of two new cells from an existing cell.

The process by which an organism becomes a mature adult.

When an organism produces new organisms like themselves.

A short segment of DNA that contains the instructions for a single trait of an organism.

Three major subdivisions of all organisms (domain bacteria, domain archaea, and domain eukarya).

The six major categories of all organisms (bacteria, archaea, protists, plants, fungi, and animals).

A branch of Biology that studies organisms interacting with each other and the environment.

Communities of living species and their physical environments.

When organisms have certain favorable traits that are better able to survive and reproduce successfully than organisms that lack these traits.

Traits that improve an individual's ability to survive and reproduce.

A series of steps that helps solve questions of nature.

The act of perceiving a natural occurrence that causes someone to pose a question.

A statement that forecasts what would happen in a test situation if the hypothesis were to be true.

A step used to test a hypothesis and its predictions.

A group that provides a normal standard for against which a scientist can compare the results to an experimental group.

Almost the exact same thing as the control group besides the fact that it contains the independent variable.

Independent variable.

The only that changes in an experiment.

The responding variable or the variable that is affected by the independent variable.

A hypothesis that has been proven to be true many times by many scientists.

When scientists who are experts receive a paper about their field and annoymously critique and read it.

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Chapter 1

The World of Biology, Themes of Biology, and The Study of Biology

Question	Answer
Biology	The study of life.
Organization	The high degree of order within an organisms internal and external parts and in its with the living world.
Cell	The smallest unit that can perform all life's processes.
Unicellular	Organisms, such as bacteria, that are made up of one cell.
Multicellular	Organisms, such as humans or trees, that are made up of many cells.
Organs	Structures that carry out specialized jobs within an organ system.
Tissues	Groups of cells that have similar abilities and that allow the organ to function.
Organelles	Tiny structures that carry out functions necessary for the cell to stay alive.
Biological Molecules	The chemical compounds in organelles that provide physical structure and bring about movement, energy use, and other cellular functions.
Homeostasis	The maintenance of a stable level of internal conditions even though environmental conditions are constantly changing.
Metabolism	The sum of all the chemical reactions that take in and transform energy and materials from the environment.
Cell Division	The formation of two new cells from an existing cell.
Development	The process by which an organism becomes a mature adult.
Reproduction	When an organism produces new organisms like themselves.
Gene	A short segment of DNA that contains the instructions for a single trait of an organism.
Domain	Three major subdivisions of all organisms (domain bacteria, domain archaea, and domain eukarya).
Kingdoms	The six major categories of all organisms (bacteria, archaea, protists, plants, fungi, and animals).
Ecology	A branch of Biology that studies organisms interacting with each other and the environment.
Ecosystems	Communities of living species and their physical environments.
Natural Selection	When organisms have certain favorable traits that are better able to survive and reproduce successfully than organisms that lack these traits.
Adaptations	Traits that improve an individual's ability to survive and reproduce.
Scientific Method	A series of steps that helps solve questions of nature.
Obeservation	The act of perceiving a natural occurrence that causes someone to pose a question.
Hypothesis	An educated guess.
Prediction	A statement that forecasts what would happen in a test situation if the hypothesis were to be true.
Experiment	A step used to test a hypothesis and its predictions.
Control Group	A group that provides a normal standard for against which a scientist can compare the results to an experimental group.
Experimental Group	Almost the exact same thing as the control group besides the fact that it contains the independent variable.
Independent variable.	The only that changes in an experiment.
Dependent Variable	The responding variable or the variable that is affected by the independent variable.
Theory	A hypothesis that has been proven to be true many times by many scientists.
Peer Review	When scientists who are experts receive a paper about their field and annoymously critique and read it.

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