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20 terms

Bio. Ch.2

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Abiogenesis
A hypothesis that states that living things can originate from nonlliving matter (spontaneous generation).
Asexual Reproduction
Reproduction in which a single parent gives rise to one or more individuals.
Biogeneis
A hypothesis that living things come from other living things.
Cell
The basic unit of structure and function of an organism.
Digestion
The metabolic processes involved in breaking down food into simpler substances.
Environment
All the living and nonliving factors that surround an organism.
Extinction
The complete elimination of a group or organisms.
Growth
An increase in living mass.
Homeostasis
The balanced regulation of metabolic proesses to maintain the conditions needed for life.
Life Span
The length of an organism's life.
Metabolism
The sum of all the chemical activities carried out by a living thing.
Multicellular
Consisting of more than one cell.
Reproduction
The process by which new individuals are produced.
Respiration
The processes by which most cells obtain energy.
Response
A reaction of an organism to a stimulus.
Sexual Reproduction
Reproduction that involves the fusion of two specialized sex cells.
Spontaneous Generation
A hypothesis that states that living thing can orinate from nonliving matter (abiogensis).
Stimulus
A change that can cause a reaction.
Synthesis
The metabolic processes by which living things combine simple substances to form more complex substances.
Unicellular
Consisting of a single cell.