25 questions · about 30 minutes. Press End Mock any time to see your score and the correct answers.
An organism's observable traits are referred to as-
Correct answer: D. Phenotype
The phenotype is the organism's observable traits; the genotype is its genetic make-up.
Which domains of Biopsychology studies the psychological effects of brain damage in human patients-
Correct answer: C. Neuropsychology
Neuropsychology studies the psychological effects of brain damage in human patients (Pinel).
The inner most meninx which adheres to the surface of the central nervous system is.
Correct answer: D. Pia Mater
The pia mater is the innermost meninx, closely attached to the surface of the brain and spinal cord.
Proteins that bind to DNA and influence the extent to which genes are expressed are called-
Correct answer: A. Transcription factor
Transcription factors are proteins that bind DNA and regulate how strongly genes are expressed.
Arrange the sequence of the Central Nervous System:
A. Dura matter
B. Sub-arachnoid space
C. Cerebrospinal Fluid
D. Arachnoid membrane
Choose the correct answer from the options given below:
Correct answer: B. A, D, B, C
Moving inward: dura mater → arachnoid membrane → subarachnoid space → cerebrospinal fluid that fills that space.
Which of the neuron parts are in correct sequence:
A. Dendrite
B. Cell body
C. Axon
D. End Brush
E. Terminal Bottom
Correct answer: B. A, B, C, D, E
Information flows dendrite → cell body → axon → end brush → terminal button.
Epileptic seizures can be a consequence of-
A. Head trauma
B. Nose running
C. Eye flue
D. Brain tumor
Choose the most appropriate answer from the options given below:
Correct answer: A. A & D only
Seizures can result from head trauma and brain tumours; a runny nose or eye flu does not cause them.
The most recent reported evolutionary development of the brain convulsions has two main regions -
A. Dorsal portion
B. Ventral portion
C. Gyri
D. Sulci
Correct answer: D. C & D only
The convoluted cerebral cortex, the most recent evolutionary development, is folded into ridges (gyri) and grooves (sulci).
The basal ganglia structures dominate the entire motor functions of -
A. Elephant
B. Human
C. Birds
D. Reptiles
Correct answer: B. C & D only
In birds and reptiles, which lack an elaborate cortex, the basal ganglia dominate motor control.
Match the following :
Correct answer: A. A-II, B-I, C-III, D-IV
Synaptic plasticity – connections change and adapt; LTP – strengthening through repeated stimulation; neurotransmitters – chemical messengers; neurogenesis – growth of new neurons.
The disorder where an extra sex chromosome in the 23rd pair results in XXY, producing a male with reduced masculine characteristics resulting in enlarged breasts, obesity and excessive height, is called
Correct answer: D. Klinefelter's syndrome
Klinefelter's syndrome (XXY) gives a male with reduced masculine traits, breast enlargement and tall stature.
In the disease called Multiple Sclerosis (MS)
Correct answer: A. The myelin Sheath is destroyed
In multiple sclerosis the myelin sheath of CNS axons is progressively destroyed.
The functions of Gamma-aminobutyric acid (GABA) can be described in terms of -
Correct answer: C. Majorly inhibitory involved in sleep and inhibitory movement
GABA is the main inhibitory neurotransmitter, involved in sleep and in inhibiting movement.
The area responsible for interaction between frontal, temporal and motor areas in order to produce speech is called
Correct answer: B. Broca's Area
Broca's area in the left frontal lobe links with temporal and motor areas to produce speech.
Pineal Gland
A. Helps increase the blood calcium level
B. Secretes a hormone called 'melatonin'
C. Is located in epithalamus
D. Secretes hormones called 'parathormone' and 'calcitonin'
E. Is used to be known as the 'Third eye'
Correct answer: B. B, C, E only
The pineal gland in the epithalamus secretes melatonin and has been called the 'third eye'; parathormone and calcitonin come from the parathyroid and thyroid.
Match List-I with List-II
Correct answer: C. A-II, B-III, C-I, D-IV
Hypothalamus – temperature, thirst, hunger; hippocampus – long-term declarative memory; amygdala – fear and fear memory; cingulate cortex – selective attention, working memory.
Correct answer: B. A-II, B-III, C-IV, D-I
Tay-Sachs – fatal neurological disorder; Down's – extra chromosome 21; Klinefelter's – XXY; Turner's – one X missing (XO).
The ability of brain to adopt to the environment and to replace function following damage is known as :
Correct answer: A. Neuroplasticity
Neuroplasticity is the brain's ability to adapt and reorganise, including taking over functions after damage.
Temporal Lobe epilepsy results in :
Correct answer: B. Aggressive behaviour
Temporal-lobe epilepsy (limbic involvement) has been linked to episodes of aggressive behaviour.
Homeostatic temperature in the body is regulated by :
Correct answer: C. preoptic region of the hypothalamus
Body temperature is regulated by thermosensitive neurons in the preoptic area of the hypothalamus.
A decrease in sensitivity to leptin is found to be a factor contributing to :
Correct answer: A. weight gain
Reduced sensitivity to leptin (leptin resistance) weakens satiety signals and contributes to weight gain.
Arrange the following in correct sequence of HPA axis response to stress, and consequences :
(A) Adrenal glands get stimulated
(B) Release of corticotropin releasing factor
(C) Release of cortisol, epinephrine and nor epinephrine
(D) Release of glucose from liver and muscle
(E) Release of adrenocorticotropic hormone
Choose the correct answer from the options given below :
Correct answer: C. B, E, A, C, D
HPA response: CRF from the hypothalamus → ACTH from the pituitary → the adrenal glands are stimulated → cortisol (and catecholamines) are released → glucose is mobilised.
Given below are two statements : one is labelled as Assertion (A) and the other is labelled as
Reason (R).
Assertion (A): Allostasis is a process of adaptation to acute stress by releasing stress hormones in the event of challenge with a goal to restore the homeostasis.
Reason (R): — HPA axis gets activated in the event of stress.
In the light of the above statements, choose the most appropriate answer from the options given below :
Correct answer: A. Both (A) and (R) are correct and (R) is the correct explanation of (A)
Allostasis — stability through change — works by releasing stress hormones through HPA-axis activation.
Which parts of the brain are connected by the cerebral Aqueduct?
Correct answer: A. Third and fourth ventricles of the brain
The cerebral aqueduct (of Sylvius) connects the third and fourth ventricles.
A unipolar neuron found in the somato sensory system are sensitive to:
Correct answer: C. Tactile sensations
Unipolar neurons of the somatosensory system carry tactile (touch) information.
