Substance E Is Made in the Pancreas, Travels Through the Blood

question 62

Multiple Choice

Substance E is made in the pancreas, travels through the blood, and binds to a surface receptor on a target cell. After dimerization and autophosphorylation, the receptor activates a signaling protein. Substance E is therefore the ligand for ____.

• A) a receptor tyrosine kinase
• B) a G-protein-coupled receptor
• C) a hormone receptor
• D) a ligand-gated ion channel
• E) guanylyl cyclase

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Definitions:

Horney

Karen Horney, a psychoanalyst known for her theories on neurosis, personality, and the importance of social relationships in mental health.

Erikson

Refers to Erik Erikson, a psychologist known for his theory on the stages of psychosocial development across the lifespan.

Freud

Freud, a neurologist from Austria, developed the psychoanalytic method, which involves treating mental illnesses through dialogue between an analyst and the person seeking help.

Anal Stage

In Freudian psychology, the second stage of psychosexual development, occurring between about 18 months and three years of age, during which children find pleasure in controlling bowel movements.