The Figure Below Shows the Oxytocin Signal Transduction Pathway in Uterine

question 224

Multiple Choice

The figure below shows the oxytocin signal transduction pathway in uterine smooth muscle cells.The abbreviation "CaM" refers to calmodulin, and "MLCK" refers to myosin light chain kinase, an enzyme that phosphorylates the light chains of myosin, stimulating smooth muscle contractions. How could this signal transduction pathway be shut off?

• A) Activate a kinase that phosphorylates phospholipase C, which inactivates it.
• B) Activate an enzyme that degrades DAG.
• C) Add a compound that acts as an agonist of IP₃ with respect to calcium ion channel binding.
• D) Add a compound that acts as an agonist of calcium ion with respect to MLCK activation.
• E) Add a compound that acts as an agonist of oxytocin with respect to oxytocin cell membrane receptor binding.

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Definitions:

Fredric Jameson

A literary critic and Marxist political theorist known for his analysis of contemporary cultural trends and the concept of postmodernity.

Monopoly Capitalism

An economic system characterized by the concentration of economic power in the hands of a few individuals or corporations, leading to market dominance and limiting competition.

Autonomy

The capacity to make an informed, uncoerced decision; often associated with the ability to govern oneself or an entity's independence.

Frederic Jameson

A literary and cultural critic known for his analysis of contemporary cultural trends and the critique of postmodernity.