Miller- Urey- Type Experiments Have Shown That

question 60

Multiple Choice

Miller- Urey- type experiments have shown that

• A)complex organic molecules can be produced by physical processes from inorganic components.
• B)simple cells could be produced in the laboratory using a "soup" of small organic molecules.
• C)living cells could survive in primitive Earth's atmosphere.
• D)given the conditions of early Earth,the formation of life would still require additional materials from meteorites and asteroids.

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Definitions:

Stimuli

Refers to physical or environmental factors that can provoke a response or reaction in a living organism.

Reinforced

Strengthened or supported, often in the context of materials or structures, but also applicable to behaviors in psychology.

Positive Reinforcement

The presentation of a stimulus following a given behavior in order to increase the frequency of that behavior.

Operant Conditioning

A learning process through which the strength of a behavior is modified by reinforcement or punishment, a principle established by B.F. Skinner.