The idea that living organisms are created from nonliving matter.

Scientist who heated amino acids to form protein-like spheres.

Geologist who believed that natural processes over a long period of time where responsible for changes to the earth's surface.

A revision of Darwin's original theory of evolution to include modern genetics.

Scientist who believed human population growth would lead to poverty and famine.

Scientist who is credited with one of the first theories of evolution; believed that organisms changed over time from simple to more complex by passing on acquired traits to offspring.

A scientific law that states that living organisms only come from other living organisms

Scientist who believed he disproved spontaneous generation by designing an experiment that kept heated broth from being re-contaminated by air.

"The father of evolution" who believed that a process called natural selection explains how organisms evolved over time.

A system that names each organism by giving its genus and species.

Scientists who formed amino acids and other simple organic compounds in a laboratory experiment by reacting ammonia, methane, and hydrogen gases mixed with water vapor.

Theory that states that organisms have changed gradually over a long period of time to form new organisms

The gradual formation of life from nonliving chemicals.

Existing with oxygen

Theory that explains the origin of mitochondria and chloroplasts in eukaryotic cells.

Unable to make food; requiring food from an outside source.

The father of taxonomy who classified organisms into groups within groups.

The theory of evolution that states gradual changes in living organisms have resulted in more complex organisms.

A relationship between two organisms where at least one benefits.

Changes in the genetic code.

Scientist who came up with a theory of evolution by means of natural selection at the same time that Darwin was developing his theory.

A cell that contains no nucleus.

The idea that organisms better suited for their environment will survive and reproduce.

The smallest taxon; represents a group of organisms that can interbreed and produce fertile offspring.

Scientist who finally disproved spontaneous generation by designing an experiment that confirmed that microorganisms can be found in the air.

The branch of biology that classifies organisms into taxa (from kingdom to species).

One of the first scientists to disprove spontaneous generation by showing that flies come from other flies and are not created from meat.

A system that names an organism by giving its genus and species followed by its subspecies or variety.