A Scientist Is Given a Sample of Earth and Discovers

question 26

Multiple Choice

A scientist is given a sample of earth and discovers that it is almost entirely iron. This sample most likely came from the _____.

• A) core
• B) outer mantle
• C) inner mantle
• D) asthenosphere
• E) lithosphere

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Definitions:

Translation

The process by which the genetic code carried by mRNA is decoded to produce the specific sequence of amino acids in a polypeptide chain.

Transcription

The process by which the information in a strand of DNA is copied into a new molecule of messenger RNA (mRNA) by the enzyme RNA polymerase.

Replication

The process of duplicating a molecule of DNA, ensuring that each new cell receives a complete set of genetic instructions.

DNA

Deoxyribonucleic acid, a molecule that carries the genetic instructions used in the growth, development, functioning, and reproduction of all known living organisms.