Why Do Chemists Use Models of Atoms and Molecules

question 16

Multiple Choice

Why do chemists use models of atoms and molecules?

• A)Use of models is more convenient and less expensive than using photographs from microscopes
• B)Matter at the particulate level is too small to be seen
• C)Chemists follow the tradition established by Watson and Crick
• D)High-powered electron microscopes create computerized models of atoms and molecules
• E)To illustrate textbooks and scientific reports with more color than black-and-white photographs of the atoms and molecules

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Definitions:

mRNA

Messenger RNA, a type of RNA that carries instructions from DNA for the synthesis of proteins.

Transcription

The procedure that involves copying the details from a DNA strand into a newly formed molecule of messenger RNA (mRNA).

Translation

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

Messenger RNA

A type of RNA that carries genetic information from DNA to the ribosome, where proteins are synthesized.