You Are Investigating an Abnormal Eukaryotic Cell Line That Makes

question 110

Essay

You are investigating an abnormal eukaryotic cell line that makes all of its mRNAs much longer than the mRNAs from normal cells. Intrigued, you examine the proteins in these abnormal cells and note that many of them are either much longer or much shorter than the normal proteins from nonmutant cells. Assuming there is just one mutant defect in these cells, which of the below possibilities is MOST likely?
A)A stop codon is mutated.
B)RNA polymerase does not recognize the terminator sequence.
C)The release factor is defective.
D)The spliceosome is nonfunctional.
E)The enzyme that adds the poly-A tail is defective.

• A)A stop codon is mutated.
• B)RNA polymerase does not recognize the terminator sequence.
• C)The release factor is defective.
• D)The spliceosome is nonfunctional.
• E)The enzyme that adds the poly-A tail is defective.

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Definitions:

Colonization Society

Often refers to organizations like the American Colonization Society, founded in the early 19th century to support the migration of free black people to Africa.

Economic Inefficiency

A situation where resources are not allocated optimally, leading to waste or a failure to achieve potential output or welfare.

Indian Removal

A 19th-century policy of the United States government aimed at relocating Native American tribes from their ancestral lands in the eastern U.S. to territories west of the Mississippi River.