Which of the Following Statements CORRECTLY Describes the Facts About

question 31

Multiple Choice

Which of the following statements CORRECTLY describes the facts about introns and exons?

• A) The number of introns is always less than the number of exons in a gene.
• B) Introns are degraded in the cytoplasm.
• C) All eukaryotic genes contain an intron.
• D) Mitochondrial and chloroplast genes do not contain introns.
• E) Introns do not contain sequence-specific information.

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Definitions:

Free Radical

Highly reactive atoms or molecules that contain unpaired electrons and can participate in chain reactions.

Chlorination

The addition of chlorine to water or organic compounds, either as a disinfectant or to introduce chlorine atoms into molecules during chemical synthesis.

Methane

A colorless, odorless gas, the simplest alkane and the main component of natural gas; used as a fuel and in organic synthesis.

Termination Reaction

The chemical reaction that concludes a chain reaction process by reacting two or more reactive intermediates to form a stable product.