What Is Significant About Detecting Uracil in Meteorites

question 8

Multiple Choice

What is significant about detecting uracil in meteorites?

• A)Uracil is found in DNA which is thought to be the original genetic material
• B)Uracil is a precursor for many other biological molecules including DNA and proteins
• C)Uracil is a very complex molecule that can only be made in living cells, thus confirming that extraterrestrial life exists
• D)Uracil is found in RNA which is thought to be the original genetic material
• E)Uracil can catalyze reactions

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Definitions:

Timbre

(TAM-burr) The distinctive quality of a sound that distinguishes it from other sounds of the same pitch and loudness.

Distinct Quality

A distinct quality refers to a characteristic or trait that sets something apart from others in a pronounced, clear way.

Incus

A small anvil-shaped bone in the middle ear, which plays a role in transmitting sound vibrations from the outer ear to the inner ear.

Stapes

A small bone in the middle ear that plays a key role in the process of hearing by transmitting sound vibrations to the inner ear.