BIO 152 Module 6 UPDATED ACTUAL
Exam Questions and CORRECT Answers
Define endocrine signaling and identify examples in homeostasis - CORRECT
ANSWER -Endocrine signaling: hormones secreted into extracellular fluid reach target
cells via bloodstream, maintains homeostasis (eg. blood pressure, blood volume, energy
metabolism and allocation, solute concentration, regulates growth and development, triggers
changes underlying sexual maturity and reproduction)
Describe the differences between paracrine and autocrine signaling - CORRECT
ANSWER -Paracrine: target cells lie near the secreting cell; Autocrine: secreting cells
themselves are the target cells
Explain why drugs that block prostaglandins produce anti-inflammatory and pain-relieving
effects - CORRECT ANSWER -Prostaglandins help regulate platelet aggregation and
promote inflammation and pain sensation in injury, so drugs that bock prostaglandin synthesis
have anti-inflammatory and pain-relieving effects (eg. aspirin, ibuprofen)
Identify the three main hormone classes - CORRECT ANSWER -1) Polypeptides, 2)
Steroids, 3) Amines
Compare and contrast characteristics of water and lipid-soluble hormones - CORRECT
ANSWER -Water-soluble: secreted by exocytosis and travel freely in the bloodstream,
cannot diffuse, bind to cell surface to trigger response, signal transduction; Lipid-soluble: bind to
transport proteins to maintain solubility, diffuse into target cells, transduces a signal within the
target, response is usually a change in gene expression
Choose the correct process for a simple endocrine pathway - CORRECT ANSWER -
Simple endocrine pathway: endocrine cells respond directly to a stimulus by secreting a
particular hormone, which travels bloodstreams and interacts with a receptor, signal transduction,
(eg. Bicarbonate, negative feedback)
Choose the correct process for a simple neuroendocrine pathway - CORRECT ANSWER -
Simple neuroendocrine pathway: stimulus received by sensory neuron which stimulates a
Exam Questions and CORRECT Answers
Define endocrine signaling and identify examples in homeostasis - CORRECT
ANSWER -Endocrine signaling: hormones secreted into extracellular fluid reach target
cells via bloodstream, maintains homeostasis (eg. blood pressure, blood volume, energy
metabolism and allocation, solute concentration, regulates growth and development, triggers
changes underlying sexual maturity and reproduction)
Describe the differences between paracrine and autocrine signaling - CORRECT
ANSWER -Paracrine: target cells lie near the secreting cell; Autocrine: secreting cells
themselves are the target cells
Explain why drugs that block prostaglandins produce anti-inflammatory and pain-relieving
effects - CORRECT ANSWER -Prostaglandins help regulate platelet aggregation and
promote inflammation and pain sensation in injury, so drugs that bock prostaglandin synthesis
have anti-inflammatory and pain-relieving effects (eg. aspirin, ibuprofen)
Identify the three main hormone classes - CORRECT ANSWER -1) Polypeptides, 2)
Steroids, 3) Amines
Compare and contrast characteristics of water and lipid-soluble hormones - CORRECT
ANSWER -Water-soluble: secreted by exocytosis and travel freely in the bloodstream,
cannot diffuse, bind to cell surface to trigger response, signal transduction; Lipid-soluble: bind to
transport proteins to maintain solubility, diffuse into target cells, transduces a signal within the
target, response is usually a change in gene expression
Choose the correct process for a simple endocrine pathway - CORRECT ANSWER -
Simple endocrine pathway: endocrine cells respond directly to a stimulus by secreting a
particular hormone, which travels bloodstreams and interacts with a receptor, signal transduction,
(eg. Bicarbonate, negative feedback)
Choose the correct process for a simple neuroendocrine pathway - CORRECT ANSWER -
Simple neuroendocrine pathway: stimulus received by sensory neuron which stimulates a
