bio quiz #11

ABSOLUTE DATING

• banana

• coil

• A dating method based on the rate of disintegration of radioactive isotopes; used to determine the age in years of rocks and fossils.

• strawberry

ANALOGOUS

STRUCTURES

• strawberry

• coil

• banana

• Parts of different organisms that have similar external forms and functions, but quite different internal structure.

EVOLUTION

• The theory that life arose by natural processes at an early stage of the earth's history and that complex organisms developed from simple organisms. The central and unifying theme of biology.

• banana

• coil

• strawberry

FOSSIL

• strawberry

• coil

• The remains or traces of organisms that lived during past eras of the earth's history.

• banana

GEL ELECTROPHORESIS

• strawberry

• A laboratory procedure using a gelatinous material and

  an electrical current to analyze DNA, RNA, and proteins based on sized

• coil

• banana

GEOLOGIC TIME SCALE

• Through a combination of absolute and relative dating of rocks, geologists have constructed a time table of the Earth's history.

  HALF-LIFE

• banana

• coil

• strawberry

HALF-LIFE

• strawberry

• The amount of time it takes for half the atoms of a given sample of a specific radioactive element to decay.

• coil

• banana

HOMOLOGOUS STRUCTURES

• strawberry

• coil

• Parts of different organisms that have similar structures and embryonic development, but different and functions

• banana

IMPRINT

• A type of fossil formed when an impression in mud made by a living thing is preserved when the mud is transformed into rock.

• coil

• banana

• strawberry

RELATIVE DATING

• banana

• coil

• A technique in which the ages of sedimentary rock are determined by comparing them to other rock layers.

• strawberry