The Action of a New Drug Is Unknown, So You

question 17

Multiple Choice

The action of a new drug is unknown, so you test various aspects of eukaryotic cell processes looking for an effect. You notice that the survival of cells exposed to this drug is very low. Further analysis shows that some proteins and mRNAs are much longer than they should be. One hypothesis is that the drug interferes with

• A)transcription termination signals.
• B)spliceosome activity.
• C)ribosomes.
• D)nucleoli.
• E)both A and B

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Definitions:

Tympanic Thermometer

A device used to measure temperature by detecting the infrared heat from the ear drum.

Kussmaul's Respiration

A form of hyperventilation that is a compensatory mechanism seen in conditions such as diabetic ketoacidosis, characterized by deep and labored breathing.

Cheyne-Stokes Respiration

A pattern of breathing characterized by a gradual increase in breathing followed by a decrease and then a period of apnea, often associated with heart failure or brain injury.

Blood Glucose

The main sugar found in the blood and the body’s primary source of energy; its regulation is vital for metabolic function.