MCAT BioChem Practice Question – Excitatory Neurotransmitter

Which of the following is most likely the excitatory neurotransmitter released into the synaptic cleft between the inner ear hair cells and their spiral ganglion? A. GABA B. Acetylcholine C. Serotonin D. Glutamate  

MCAT Psychology Practice Question – Bipolar Disorder

Upon admission to a hospital for a severe manic episode, a patient exhibits an excitable, cheerful demeanor as well as psychotic delusions of being a celebrity. These symptoms all disappear after six weeks of treatment. He experiences a normal mood for seven more months before suffering a severe depressive episode. This patient would most likely

MCAT Physics Practice Question – Radiation Absorption

Absorption of radiation corresponding to what portion of the electromagnetic spectrum is most likely to excite Aequorea fluorophore, a green fluorescent protein used in biological experiments? A. Ultraviolet B. Infrared C. Orange D. Microwave

MCAT Physics Practice Question – Fluid Dynamics

Which of the following statements are true? I. The blood velocity and pressure are higher in arteries than in capillaries. II. Blood vessels do NOT follow Bernoulli’s principle if viscosity of blood is taken into account. III. For an incompressible fluid undergoing laminar flow through a pipe with both narrow and wide sections, the fluid

MCAT BioChem Practice Question – Sleep Study

BTW, only 30% of students get this question right! Do you know the correct answer?  Study participants are asked to live in a dark room for several consecutive days. Assuming healthy participants with normally functioning immune systems, their brains would be expected to release less of which hormone? A. Melatonin B. ACTH C. Serotonin D.

MCAT Chemistry Practice Question – Amines

If hexanamide is treated with ethanol, what would be the expected products? A. Hexanamide and water B. Ethyl hexanoate and an amine C. Hexanoic acid and an amine D. No reaction  

MCAT Chem Practice Question – Ion to Atoms Ratio

A 1-L beaker is filled with 2 moles of liquid methanol and 0.25 moles of NaCl. The ratio of ions to atoms in this solution is: A. 0.5:2 B. 1:6 C. 1:25 D. 3:1  

MCAT Biology Question — Hormones