After Reading the Paragraph Below, Answer the Questions That Follow

question 71

Multiple Choice

After reading the paragraph below, answer the questions that follow.
While DNA microarrays can be used to determine whether or not a gene is expressed in a cell, quantitative polymerase chain reaction (qPCR) can be used to measure the extent of gene expression in cells and tissues. To perform qPCR, mRNA is extracted from cells and reverse transcribed to complementary DNA (cDNA) . Using fluorescent DNA molecules that recognize specific gene sequences and DNA polymerase, copies of the gene sequence of interest are made. After the copies are made, a fluorescent detector measures the intensity of the fluorescent signal, which is proportional to the number of mRNA transcripts in the cell and corresponds to the level of gene expression in the cell.
-A pancreatic cell normally produces low levels of the protein insulin, but after a meal it produces large levels of insulin before returning to its initial state. Which of the following figures would represent qPCR data obtained from a pancreatic cell that went through this cycle?

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Definitions:

Interpersonal Skills

The abilities used by a person to interact effectively with others, including communication, listening, empathy, and conflict resolution skills.

Antianxiety Drugs

Medications used to treat and manage symptoms of anxiety disorders by affecting neurotransmitters in the brain to reduce anxiety levels.

Tranquilizers

Medications used to reduce tension or anxiety, often by depressing central nervous system activities.

Mood Stabilizers

Medications used to treat mood disorders, such as bipolar disorder, by stabilizing emotional highs and lows.