Q- A drug that increases GABA activity in the central nervous system is prescribed for anxiety. Which class of drugs acts by increasing the frequency of chloride channel opening at the GABA-A receptor?
A- Barbiturates
B- Benzodiazepines
C- Selective serotonin reuptake inhibitors
D- Tricyclic antidepressants
Q- A woman has heavy menstrual bleeding and prolonged bleeding time. Platelet count is normal. Which disorder is most likely?
A- Bernard-Soulier syndrome
B- Hemophilia A
C- Von Willebrand disease
D- Vitamin K deficiency
Q- A newborn develops jaundice and hepatomegaly within the first week of life. Laboratory studies show elevated galactose-1-phosphate levels. Which enzyme deficiency is most likely responsible?
A- Galactokinase
B- Galactose-1-phosphate uridyltransferase
C- Glucose-6-phosphate dehydrogenase
D- Pyruvate dehydrogenase
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