General Science :: All Aptitude Test ::

1.Which of the following is NOT the component of the PNS?
A. Elastic connective tissue
B. Cranial nerves
C. Spinal nerves
D. Elastic connective tissue

2.Name the basic structural and functional unit of the nervous system?
A. Neuroglia
B. Glial cells
C. Neurons
D. Neuroglia

3.Which of the following cells supports, nourishes, and protect the neurons?
A. Nissl bodies
B. Perikaryon
C. Ganglia
D. Nissl bodies

4.What is the speed of nerve impulse?
A. 60 m/s
B. 0.5 – 130 m/s
C. 10-30 m/s
D. 60 m/s

5.What are Nissl bodies?
A. Golgi bodies
B. Lysosomes
C. Cluster of rough endoplasmic reticulum
D. Golgi bodies

6.Which of the following is NOT found in axon?
A. Endoplasmic reticulum
B. Neurofibrils
C. Mitochondria
D. Endoplasmic reticulum

7.Name the multipolar neuron which is located entirely within the central nervous system.
A. Motor neuron
B. Efferent neuron
C. Afferent neuron
D. Motor neuron

8.Out of the following, which one does not affect the speed of conduction of nerve impulse.
A. No. of ganglia
B. Myelin sheath
C. Axon diameter
D. No. of ganglia

9.Organs involve in the sensation of the body is known as?
A. Organ system
B. Muscular system
C. Nervous tissue
D. Organ system

10.Which of the following is known as the “window of the brain”?
A. Sensory organs
B. Cranial nerves
C. Eyes
D. Sensory organs

11.Which of the following helps in maintaining the shape of the eye?
A. Neuroglia
B. Aqueous humor
C. Vitreous humor
D. Neuroglia

12.Mark the INCORRECT statement about the lens?
A. Protein found in the lens are α, β, and γ crystalline
B. Composed of water and proteins
C. Mainly made up of water
D. Protein found in the lens are α, β, and γ crystalline

13.What is Sclera?
A. Cornea
B. White part of the eye
C. Red part of the eye
D. Cornea

14.Name the part of the eye, which is involved in focusing light on the retina?
A. Sclera
B. Iris
C. Cornea
D. Sclera

15.Iris is found in which layer of the eyeball?
A. Vascular tunic
B. Retina
C. Fibrous tunic
D. Vascular tunic

16.Among the following, which is one is more vascularized and pigmented.
A. Cornea
B. Iris
C. Ciliary body
D. Cornea

17.Name the part of the eye which produces aqueous fluid that fills the front part of the eye.
A. Ciliary body
B. Cornea
C. Vitreous humor
D. Ciliary body

18.In human ear, secretion of wax is done by?
A. Cochlea
B. Vestibule
C. Basilar membrane
D. Cochlea

19.Conversion of vibrations into compressed wave takes place in which part of human ear?
A. Inner ear
B. Middle ear
C. Outer ear
D. Inner ear

20.Cohesion of water molecules is due to___________
A. Diffusion
B. Osmosis
C. Gravitational force
D. Diffusion

21.Conversion of vibrations into compressed wave takes place in which part of human ear?
A. Inner ear
B. Middle ear
C. Outer ear
D. Inner ear

22.Name the light absorbing pigment present in the Rods?
A. a) Neuroglia
B. b) Aqueous humor
C. c) Rhodopsin
D. a) Neuroglia

23.Name the G- protein, which takes part in vision?
A. Ethylene
B. Adenosine
C. Acetylcholine
D. Ethylene

24.Which of the following is NOT the property of water?
A. Nonpolar molecule
B. Excellent solvent
C. High heat of vaporization
D. Nonpolar molecule

25.Name the term which is given for the movement of water through a semipermeable membrane?
A. Diffusion
B. Osmosis
C. Tonicity
D. Diffusion

26.15. What is the absorption peak of green absorbing cones?
A. a) 565 nm
B. b) 535 nm
C. c) 768 nm
D. a) 565 nm

27.7. Which of the following is NOT true for Rods?
A. a) Used for scotopic vision
B. b) Loss causes night blindness
C. c) Not very light sensitive
D. a) Used for scotopic vision

28.18. Name the tiny bone of the middle ear, which convert sound into vibration?
A. a) Stapes
B. b) Malleus
C. c) Incus
D. a) Stapes

29.What is the measure of the osmotic pressure gradient of solutions separated by a semipermeable membrane?
A. Water potential
B. Ficks law
C. Turgor pressure
D. Water potential

30.1. Chemical messengers secreted by ductless glands are called___________
A. a) Lymph
B. b) Platelets
C. c) Plasma
D. a) Lymph


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