MCQOPTIONS
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MCQOPTIONS
This section includes 15 Mcqs, each offering curated multiple-choice questions to sharpen your Cell Biology knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Action potential can only flow in the forward direction. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 2. |
Local anesthetics act by _____________ the ion channels. |
| A. | inactivating |
| B. | opening |
| C. | closing |
| D. | mutating |
| Answer» D. mutating | |
| 3. |
The parts in the figure are a)__________, b)_____________, c)___________, d)____________. |
| A. | dendrites, soma, myelin sheath, nodes of ranvier |
| B. | _____________, c)___________, d)____________. a) dendrites, soma, myelin sheath, nodes of ranvierb) dendrites, soma, cell body, axon hillock, myelin sheath |
| C. | ___________, d)____________. a) dendrites, soma, myelin sheath, nodes of ranvierb) dendrites, soma, cell body, axon hillock, myelin sheathc) soma, axon hillock, myelin sheath, dendrites |
| D. | ____________. a) dendrites, soma, myelin sheath, nodes of ranvierb) dendrites, soma, cell body, axon hillock, myelin sheathc) soma, axon hillock, myelin sheath, dendritesd) soma, axon hillock, axon, dendrites |
| Answer» B. _____________, c)___________, d)____________. a) dendrites, soma, myelin sheath, nodes of ranvierb) dendrites, soma, cell body, axon hillock, myelin sheath | |
| 4. |
Saltatory conduction occurs due to _______________ |
| A. | axon hillock |
| B. | soma |
| C. | myelin sheath |
| D. | nodes of ranvier |
| Answer» D. nodes of ranvier | |
| 5. |
A neuron fires when _____________________ |
| A. | action potential is achieved |
| B. | apoptosis is induced |
| C. | re-stimulation occurs |
| D. | stimulation ceases |
| Answer» B. apoptosis is induced | |
| 6. |
Depolarization is when ___________ ions flow inside the neuron’s membrane. |
| A. | Potassium |
| B. | Sodium |
| C. | Chloride |
| D. | Magnesium |
| Answer» C. Chloride | |
| 7. |
On which of the following organisms, the research on nerve cells was first carried out? |
| A. | Drosophila melanogaster |
| B. | Grasshopper |
| C. | Giant squid |
| D. | Octopus |
| Answer» D. Octopus | |
| 8. |
Which of the following has the highest permeability in a resting nerve cell? |
| A. | Na+ |
| B. | Cl– |
| C. | I– |
| D. | K+ |
| Answer» E. | |
| 9. |
Which of the following exists in nerve and muscle cells? |
| A. | resting potential |
| B. | membrane potential |
| C. | potassium equilibrium potential |
| D. | sodium equilibrium potential |
| Answer» B. membrane potential | |
| 10. |
Membrane potential is present only in nerve cells. |
| A. | True |
| B. | False |
| Answer» C. | |
| 11. |
Myelin sheath is composed mainly of _____________ |
| A. | proteins |
| B. | lipids |
| C. | nucleic acids |
| D. | cholesterol |
| Answer» C. nucleic acids | |
| 12. |
The information is forwarded from the neuron through which part? |
| A. | axon |
| B. | soma |
| C. | dendrites |
| D. | nucleus |
| Answer» B. soma | |
| 13. |
Which part of a neuron receives information from other neurons? |
| A. | cell body |
| B. | axon |
| C. | dendrites |
| D. | myelin sheath |
| Answer» D. myelin sheath | |
| 14. |
Information is coded in the form of fast moving impulse in which types of cells? |
| A. | epithelial |
| B. | endothelial |
| C. | neurons |
| D. | hepatocytes |
| Answer» D. hepatocytes | |
| 15. |
Response to external stimulus is called _______________ |
| A. | reaction |
| B. | immunity |
| C. | response |
| D. | irritability |
| Answer» E. | |