A drug acts as an inhibitor of acetylcholinesterase. Administration of this drug would lead to:
1. accumulation of acetylcholine in the synaptic cleft
2. accumulation of acetylcholinesterase in the synaptic cleft
3. muscle relaxation
4. repeated action potentials

Located in the lower portion of the frontal lobe, the Broca's area is primarily concerned with:

1. visual reflexes
2. motor speech
3. neural hearing
4. sensory impulses

The precentral gyrus in the parietal lobe is the primary:
1. sensory area
2. visual area
3. auditory area
4. motor area

The longest cranial nerve with a large number of parasympathetic fibers is:
1. phrenic
2. spinal accessory
3. vagus
4. thoracic

Odors can alter our moods:

1. Because sensory input from olfaction is routed through the limbic system.

2. Because odors act as neurotransmitters and alter brain chemistry.

3. Because odors are satisfying to our sense of hunger.

4. Odors do not alter mood.

The extraocular muscles are innervated by all the following cranial nerves except:
1. oculomotor
2. trochlear
3. abducens
4. optic

Choose the correct statement:
1. Nociceptors respond to changes in pressure
2. Meissner’s corpuscles are thermoreceptors
3. Photoreceptors in the human eye are depolarised during darkness and become hyperpolarised in response to the stimulus
4. Receptors do not produce graded potentials

Alzheimer’s disease in humans is associated with the deficiency of
1. dopamine
2. glutamic acid
3. acetylcholine
4. Gamma Amino Butyric Acid (GABA)

A person is wearing spectacles with concave lenses for correcting vision. While not using the glasses, the image of a distant object in his case will be formed:
1. on the blind spot
2. behind the retina
3. in front of the retina
4. on the yellow spot

Assertion: Nerve gas Sarin and agricultural insecticide Parathion can cause severe spastic paralysis in humans.
Reason: Sarin and Parathion act as inhibitors of the enzyme choline acetyl transferase.

1. Both assertion and reason are true and the reason is the correct explanation of the assertion.
2. Both assertion and reason are true but the reason is not the correct explanation of the assertion.
3. Assertion is true but reason is false.
4. Both assertion and reason are false.