When a Solution of DNA in Water Is Heated, the Double

question 119

Multiple Choice

When a solution of DNA in water is heated, the double helix separates into two single strands. This process is called melting. What can be deduced from this information about the signs of the enthalpy and entropy changes for DNA melting?

• A)(  H  0 and  S  0)
• B)(  H  0 and  S  0)
• C)(  H  0 and  S  0)
• D)(  H  0 and  S  0)
• E)This information is not sufficient to determine the signs of  H and  S.

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Definitions:

Excitable

Easily stirred or capable of being stimulated or excited quickly.

Productive

The state of being able to produce goods, services, ideas or results, often associated with efficiency and effectiveness.

Mania

An extreme or excessive enthusiasm or excitement, often a symptom of bipolar disorder characterized by elevated moods, energy, and activity.

Schizophrenic Disorders

A category of severe mental disorders characterized by disorganized and delusional thinking, inappropriate emotions, and auditory hallucinations.