A Drug Designed to Inhibit the Response of Cells to a Growth

question 38

Multiple Choice

A drug designed to inhibit the response of cells to a growth factor would almost certainly result in which of the following?

• A)lower cytoplasmic levels of cAMP
• B)an increase in receptor tyrosine kinase activity
• C)a decrease in transcriptional activity of certain genes
• D)an increase in cytosolic calcium concentration
• E)a decrease in G protein activity

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Definitions:

Palatine Processes

These are horizontal extensions of the maxillary bones that form the anterior three-quarters of the hard palate.

Maxilla

The paired upper jawbones that form the foundations of the middle face, supporting the upper teeth and playing key roles in breathing, eating, and speaking.

Cleft Lip

A congenital facial defect that occurs when the upper lip does not form completely, leading to a gap or split.

Mandible

The lower jaw or jawbone, the largest and strongest bone of the face, which holds the lower teeth in place and moves during chewing.