Experiments Like Those Performed by Stanley Miller in the 1850s

question 44

Multiple Choice

Experiments like those performed by Stanley Miller in the 1850s demonstrated that lightening-fueled atmospheric reactions could produce ____.

• A) self-replicating DNA molecules
• B) organic compounds required for life under artificial conditions
• C) prokaryotic cells under artificial conditions
• D) meteorites containing the building blocks of life
• E) organic molecules in hydrothermal vents

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Definitions:

Direct Effects

Immediate consequences or outcomes of an action, without intermediaries or secondary processes.

Realized Niche

The actual conditions and resources in which a species exists as a result of competition in its ecosystem.

Fundamental Niche

The potential mode of existence of a species given its adaptations, without considering the effects of competition or other biotic factors on its actual distribution.

Limiting Resources

Essential resources (such as food, water, and shelter) that are in short supply, limiting the growth, reproduction, or distribution of organisms.