ASU BIO 202: Exam 1
2026/2027 Updated
Questions and Correct
Answers
What are the chemical messengers secreted into the blood stream that act on
cells far away?
Answer: hormones
What are released by nerves to affect cells?
Answer: neurotransmitters
What type of glands secrete chemicals (hormones) into the blood?
Answer: endocrine
What are the cells that are acted on by hormones called?
Answer: target organ cells
,What mechanism perform general functions of communication and control but a
slower, longer-lasting type of control than that provided by nerve impulses?
Answer: hormones
What mechanism binds to receptors on the target cell membrane, triggering
second messengers to affect the cell's activities?
Answer: nonsteroid hormones (first messengers)
What mechanism binds to receptors within the target cell nucleus and influence
cell activity by acting on DNA?
Answer: steroid hormones
What, in the regulation of hormone secretion is controlled by homeostatic
feedback?
Answer: hormone secretion
,What, in the regulation of hormone secretion, are mechanisms that reverse the
direction of a change in a physiological system?
Answer: negative feedback
What, in the regulation of hormone secretion, are mechanisms that amplify
physiological changes?
Answer: positive feedback (uncommon)
What is secretion of an excess of hormone that is a mechanism of endocrine
disease?
Answer: hypersecretion
What is insufficient hormone secretion that is a mechanism of endocrine
disease?
Answer: hyposecretion
, What intercellular chemical signal is secreted by cells in a local area and
influences the activity of the same cell type from which it was secreted (ex.
prostaglandins)?
Answer: autocrine
What intercellular chemical signal is produced by a wide variety of tissues and
secreted into tissue spaces; usually has a localized effect on other tissues (ex.
histamine, prostaglandins)?
Answer: paracrine
What intercellular chemical signal is secreted into the blood by specialized
cells; travels some distance to target tissues and influences specific activities
(ex. thyroxine, insulin)?
Answer: hormone
What intercellular chemical signal is produced by neurons and functions like
hormones (ex. oxytocin, antidiuretic hormone)?
Answer: neurohormone
2026/2027 Updated
Questions and Correct
Answers
What are the chemical messengers secreted into the blood stream that act on
cells far away?
Answer: hormones
What are released by nerves to affect cells?
Answer: neurotransmitters
What type of glands secrete chemicals (hormones) into the blood?
Answer: endocrine
What are the cells that are acted on by hormones called?
Answer: target organ cells
,What mechanism perform general functions of communication and control but a
slower, longer-lasting type of control than that provided by nerve impulses?
Answer: hormones
What mechanism binds to receptors on the target cell membrane, triggering
second messengers to affect the cell's activities?
Answer: nonsteroid hormones (first messengers)
What mechanism binds to receptors within the target cell nucleus and influence
cell activity by acting on DNA?
Answer: steroid hormones
What, in the regulation of hormone secretion is controlled by homeostatic
feedback?
Answer: hormone secretion
,What, in the regulation of hormone secretion, are mechanisms that reverse the
direction of a change in a physiological system?
Answer: negative feedback
What, in the regulation of hormone secretion, are mechanisms that amplify
physiological changes?
Answer: positive feedback (uncommon)
What is secretion of an excess of hormone that is a mechanism of endocrine
disease?
Answer: hypersecretion
What is insufficient hormone secretion that is a mechanism of endocrine
disease?
Answer: hyposecretion
, What intercellular chemical signal is secreted by cells in a local area and
influences the activity of the same cell type from which it was secreted (ex.
prostaglandins)?
Answer: autocrine
What intercellular chemical signal is produced by a wide variety of tissues and
secreted into tissue spaces; usually has a localized effect on other tissues (ex.
histamine, prostaglandins)?
Answer: paracrine
What intercellular chemical signal is secreted into the blood by specialized
cells; travels some distance to target tissues and influences specific activities
(ex. thyroxine, insulin)?
Answer: hormone
What intercellular chemical signal is produced by neurons and functions like
hormones (ex. oxytocin, antidiuretic hormone)?
Answer: neurohormone
