MDCAT Biology MCQs

Correct answer C. Hydrolysing acetylcholine so that stimulation of the postsynaptic membrane stops

Correct answer A. Neurotransmitter is released only from the presynaptic side and receptors are only on the postsynaptic side

Correct answer B. The sensory neuron synapses directly with the motor neuron

Correct answer D. Receptor → sensory neuron → relay neuron → motor neuron → effector

Correct answer D. Conditioned reflex

Correct answer B. Blinking when an object approaches the eye

Correct answer A. Cerebellum

Correct answer D. Medulla oblongata

Correct answer B. Hypothalamus

Correct answer B. Cerebrum

Correct answer D. Midbrain, pons and medulla oblongata

Correct answer D. Midbrain

Correct answer D. Thyroid

Correct answer D. Adrenaline

Correct answer A. It raises blood glucose by stimulating glycogen breakdown in the liver

Correct answer A. Allowing exchange of materials such as mRNA between nucleus and cytoplasm

Correct answer D. Ribosomes

Correct answer A. Centrioles

Correct answer A. Positively charged amino acids such as lysine and arginine

Correct answer D. DNA wound around a core of eight histone molecules