This set of Neural Networks online quiz focuses on “Characteristics – 2”.
1. What is approx size of neuron body(in micrometer)?
a) below 5
b) 5-10
c) 10-80
d) above 100
View Answer
Explanation: Average size of neuron body lies in the above limit.
2. What is the gap at synapses(in nanometer)?
a) 50
b) 100
c) 150
d) 200
View Answer
Explanation: It is near to 200nm.
3. What is charge at protoplasm in state of inactivity?
a) positive
b) negative
c) neutral
d) may be positive or negative
View Answer
Explanation: It is due to the presence of potassium ion on outer surface in neural fluid.
4. What is the main constituent of neural liquid?
a) sodium
b) potassium
c) Iron
d) none of the mentioned
View Answer
Explanation: Potassium is the main constituent of neural liquid & responsible for potential on neuron body.
5. What is average potential of neural liquid in inactive state?
a) +70mv
b) +35mv
c) -35mv
d) -70mv
View Answer
Explanation: It is a basic fact, founded out by series of experiments conducted by neural scientist.
6. At what potential does cell membrane looses it impermeability against Na+ ions?
a) -50mv
b) -35mv
c) -60mv
d) -65mv
View Answer
Explanation: Cell membrane looses it impermeability against Na+ ions at -60mv.
7. What is effect on neuron as a whole when its potential get raised to -60mv?
a) it get fired
b) no effect
c) it get compressed
d) it expands
View Answer
Explanation: Cell membrane looses it impermeability against Na+ ions at -60mv.
8. The membrane which allows neural liquid to flow will?
a) never be imperturbable to neural liquid
b) regenerate & retain its original capacity
c) only the certain part get affected, while rest becomes imperturbable again
d) none of the mentioned
View Answer
Explanation: Each cell of human body(internal) has regenerative capacity.
9. How fast is propagation of discharge signal in cells of human brain?
a) less than 0.1m/s
b) 0.5-2m/s
c) 2-5m/s
d) 5-10m/s
View Answer
Explanation: The process is very fast but comparable to the length of neuron.
10. What is the function of neurotransmitter ?
a) they transmit data directly at synapse to other neuron
b) they modify conductance of post synaptic membrane for certain ions
c) cause polarisation or depolarisation
d) both polarisation & modify conductance of membrane
View Answer
Explanation: Excitatory & inhibilatory activities are result of these two process.
Sanfoundry Global Education & Learning Series – Neural Networks.
To practice all areas of Neural Networks for online quizzes, here is complete set on 1000+ Multiple Choice Questions and Answers.
