UPSC,PCS,CDS,NDA /UPSC,PCS,CDS,NDA Sample Test,Sample questions

Question:
 A substance that binds to a receptor is known as

1.a Carlsson mediator

2.a ligand

3.an anti-telharsic inhibitor

4.a gluon


Question:
 A typical synaptic cleft is

1.40 nm wide

2.60 nm wide

3.80 nm wide

4.20 nm wide


Question:
 Neurons are specialized to receive, conduct and transmit

1.electrochemical signals

2.action potentials

3.electrical signals

4.chemical signals


Question:
 Once released, neurotransmitter molecules typically produce signals in postsynaptic neurons by

1.entering the postsynaptic neuron

2.attaching to vesicles

3.binding to presynaptic receptors

4.binding to postsynaptic receptors


Question:
 The abbreviation 5-HT stands for

1.serotonin

2.dopamine

3.acetylcholine

4.tryptophan


Question:
 The end of the rising phase of an action potential occurs when the

1.potassium channels close

2.sodium channels close

3.potassium channels open

4.chloride channels open


Question:
A membrane potential is the difference in electrical charge between

1.potassium and sodium ions

2.the inside and outside of the cell

3.phosphoric acid and glycolipid layers

4.resting and action potentials


Question:
A neuron fires when



1.there is an excitatory postsynaptic potential (EPSP)

2.hyperpolarization occurs at the axon hillock

3.neurotransmitters dock onto receptor proteins

4.depolarization at the axon hillock exceeds the threshold for excitation


Question:
After release, most neurotransmitters are deactivated by

1.reuptake

2.postsynaptic receptors

3.enzymes

4.buffered diffusion


Question:
An adult brain contains roughly how many neurons?

1.10 million

2.10 billion

3.100 million

4.100 billion


Question:
Antipsychotic drugs given for schizophrenia and psychosis are.

1.selective serotonin reuptake inhibitors

2.acetylcholine agonists

3.postsynaptic dopamine antagonists

4.testosterone antagonists


Question:
Drugs that facilitate the activity of a synapse of a particular neurotransmitter are said to be ______ of that neurotransmitter.

1.agonists

2.antagonists

3.autoreceptors

4.endorphins


Question:
Exogenous substances

1.originate within the body

2.are released via exocytosis

3.are natural neurotransmitters

4.originate outside the body


Question:
Interactions between neurons commonly occur across junctions called

1.synapses

2.juxtapositions

3.presynaptic membranes

4.postsynaptic membranes


Question:
Microdialysis is a technique used to measure

1.action potentials

2.inhibitory postsynaptic potentials

3.neurotransmitters

4.brain waves


Question:
Most of a neuron’s DNA is contained within its

1.cytoplasm

2.axon

3.nucleus

4.endoplasmic reticulum


Question:
Neurotransmitter release occurs through the process of

1.excitation

2.exocytosis

3.pinocytosis

4.synthesis


Question:
Neurotransmitters are often stored in

1.synaptic buttons

2.microtubules

3.vesicles

4.endoplasmic reticulum


Question:
What effect does myelination have on axons?

1.it protects them from damage

2.it slows the propagation of signals along them

3.it prevents cross talk between adjacent axons

4.it allows them to conduct signals significantly faster


Question:
What part of a neuron is sometimes myelinated?

1.dendrite

2.axon

3.soma

4.axon hillock


More MCQS

  1. Indian Geography Multiple Choice Questions (MCQs) Quiz for State Set 1
  2. Indian Geography Multiple Choice Questions (MCQs) Quiz for State Set 2
  3. India Current Affairs [Nation & States] Multiple Choice Questions (MCQs) Quiz
  4. Ancient Indian History [Nation & States] Multiple Choice Questions (MCQs) Quiz SET 1
  5. Ancient Indian History [Nation & States] Multiple Choice Questions (MCQs) Quiz SET 2
  6. Ancient Indian History [Nation & States] Multiple Choice Questions (MCQs) Quiz SET 3
  7. World Geography MCQs for UPSC, State PCS and SSC Examinations SET 1
  8. World Geography MCQs for UPSC, State PCS and SSC Examinations SET 2
  9. Indian Polity & Constitution MCQs for UPSC, State PCS and SSC Examinations SET 1
  10. Indian Polity & Constitution MCQs for UPSC, State PCS and SSC Examinations SET 2
  11. Sports GK Questions - MCQs on Sports General Knowledge
  12. Sports General Knowledge(GK) MCQS
  13. Economics(Trade) General Knowledge(GK) MCQS Part 1
  14. Economics(Trade) General Knowledge(GK) MCQS Part 2
  15. Banking Awareness MCQs Part1
  16. Banking Awareness MCQs Part2
  17. Computer Awareness MCQs
  18. Computer Awareness MCQ Competitive Exam - Sample Test 1
  19. Computer Awareness MCQ Competitive Exam - Sample Test 2
  20. Computer Awareness MCQ Competitive Exam - Sample Test 3
  21. Computer Awareness MCQ Competitive Exam - Sample Test 4
  22. Computer Awareness MCQ Competitive Exam - Sample Test 5
  23. Computer Awareness MCQ Competitive Exam - Sample Test 6
  24. Computer Awareness MCQ Competitive Exam - Sample Test 7
  25. Computer Awareness MCQ Competitive Exam - Sample Test 8
  26. Computer Awareness MCQ Competitive Exam - Sample Test 9
  27. Computer Awareness MCQ Competitive Exam - Sample Test 10
  28. Computer Awareness MCQ Competitive Exam - Sample Test 11
  29. Computer Awareness MCQ Competitive Exam - Computer
  30. GK MCQ Questions Competitive Exams section 1
  31. GK MCQ Questions Competitive Exams section 2
  32. Computer Questions MCQ
  33. Indian Geography” mcq IAS, State PSC, SSC, and other similar competitive exams.
  34. MCQ Questions on Indus Valley Civilisation
  35. Mauryan Empire History Multiple Choice Questions Set 1
  36. Mauryan Empire and Magadha Empire History Multiple Choice Questions Set 2
  37. History Mcq
  38. Atmosphere Multiple Choice Questions Set 1
  39. Atmosphere Multiple Choice Questions Set 2
  40. Hydrosphere General Knowledge Questions
  41. British Rule in India History Multiple Choice Questions set 1
  42. British Rule in India History Multiple Choice Questions set 2
  43. British Rule in India History Multiple Choice Questions set 3
  44. Atmosphere Multiple Choice Questions Set 3
  45. 18th Century Revolts And Reform History Multiple Choice Questions set 1
  46. 18th Century Revolts And Reform History Multiple Choice Questions set 2
  47. Lithosphere Multiple Choice Questions Set 1
  48. MCQ Questions on Political Geography of India Set 1
  49. Lithosphere Multiple Choice Questions Set 2
  50. Lithosphere Multiple Choice Questions Set 3
  51. MCQ Questions on Political Geography of India Set 2
  52. MCQ Questions on Political Geography of India Set 3
  53. World History MCQ Questions Set-1
  54. World History MCQ Questions Set-2
  55. Climate and Weather in Indian Geography Multiple Choice Questions set 1
  56. MCQ Questions on Climate and Weather in Indian Geography set 2
  57. World History Practice MCQ Set-3
  58. World History Practice MCQ Set-4
  59. World Geography Miscellaneous MCQ set-1
  60. World Geography Miscellaneous MCQ set-2
  61. World Geography Miscellaneous MCQ set-3
  62. World Geography Miscellaneous MCQ set-4
  63. World Geography Miscellaneous MCQ set-5
  64. World Geography Miscellaneous MCQ set-6
  65. UPSC,PCS,CDS,NDA & SSC Examinations.
Search
Olete Team
Online Exam TestTop Tutorials are Core Java,Hibernate ,Spring,Sturts.The content on Online Exam Testwebsite is done by expert team not only with the help of books but along with the strong professional knowledge in all context like coding,designing, marketing,etc!