Which of the Following Statements Is True of Signal Molecules

question 61

Multiple Choice

Which of the following statements is true of signal molecules?

• A) When signal molecules first bind to receptor tyrosine kinases, the receptors phosphorylate a number of nearby molecules.
• B) In response to some G protein-mediated signals, a special type of lipid molecule associated with the plasma membrane is cleaved to form IP₃ and calcium.
• C) In most cases, signal molecules interact with the cell at the plasma membrane, enter the cell, and eventually enter the nucleus.
• D) Protein kinase A activation is one possible result of signal molecules binding to G protein-coupled receptors.

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Definitions:

Kidnap

The act of unlawfully seizing and carrying away a person by force or Fraud, or seizing and detaining a person against his or her will with an intent to carry that person away at a later time.

Social Withdrawal

The tendency to withdraw from social interactions, often as a response to fear, anxiety, or preference for solitude.

Poverty of Speech

A reduction in speech output that is often seen in various mental health disorders; it's characterized by brief and unelaborated responses.

Blunted Affect

A symptom of schizophrenia in which a person shows less emotion than most people.