A.EpinephrineB.GABAC.GlucagonD.InsulinE.Vitamin D
A 70-year-old woman comes the physician after a fall. X-raysshow pathological fractures of lumbar vertebrae and severallong bones. Bone density scanning shows significantosteoporosis. She is prescribed a medication that is able to passthrough the cell membrane without the use of a receptor. Whichof the following substances best matches this description?A.EpinephrineB.GABAC.GlucagonD.InsulinE.Vitamin D
A 60-year-old man comes to the emergency department with a1-hour history of chest pain. He tells this physician this hashappened frequently over the past year. An EKG demonstratesa normal sinus rhythm with no acute changes. Angina is thesuspected diagnosis and the patient is prescribed nitroglycerinto alleviate the pain. Which of the following is the target fornitroglycerin (NO)?A.GsαB.Guanylyl cyclaseC.GqαD.Nuclear receptorE.Cytosolic receptor
A 60-year-old man comes to the emergency department with a1-hour history of chest pain. He tells this physician this hashappened frequently over the past year. An EKG demonstratesa normal sinus rhythm with no acute changes. Angina is thesuspected diagnosis and the patient is prescribed nitroglycerinto alleviate the pain. Which of the following is the target fornitroglycerin (NO)?A.GsαB.Guanylyl cyclaseC.GqαD.Nuclear receptorE.Cytosolic receptor
A 20-year-old medical student comes to the walk-in clinic with a1-hour history of palpitations. She has been using caffeine pillsand energy drinks in order to stay awake to study for her big teston Monday. Caffeine exerts its effects by which of the followingmechanisms?A.Activation of Gqα, leading to increased levels of IP3, DAG, andCA2+B.Binding to a steroid receptor, leading to increased gene expressionC.Inhibition of Gqα, leading to low levels of IP3, DAG, and CA2+D.Inhibition of Gsα, leading to low levels of cAMPE.Inhibition of phosphodiesterase, decreasing the degradation ofcAMP to 5’-AMP
A 20-year-old medical student comes to the walk-in clinic with a1-hour history of palpitations. She has been using caffeine pillsand energy drinks in order to stay awake to study for her big teston Monday. Caffeine exerts its effects by which of the followingmechanisms?A.Activation of Gqα, leading to increased levels of IP3, DAG, andCA2+B.Binding to a steroid receptor, leading to increased gene expressionC.Inhibition of Gqα, leading to low levels of IP3, DAG, and CA2+D.Inhibition of Gsα, leading to low levels of cAMPE.Inhibition of phosphodiesterase, decreasing the degradationof cAMP to 5’-AMP
A 25-year-old man is found collapsed in a corn field and taken tothe emergency department. The causal agent is determined tobe exposure to diisopropyl fluorophosphate, an insecticide.Which of the following mechanisms best describes the effect ofthis compound?
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