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[A] : Acetylchoiine allows a nerve cell...

[A] : Acetylchoiine allows a nerve cell to com- municate chemically with a muscle cell at neuromuscular junction.
[R]: Acetyicholine diffuses across the junc- tion and binds to some receptors on mem- brane of muscle cell.

A

If both A and R are true and R is the correct explanation of A

B

If both A and R are true but R is not the correct explanation of A

C

If A is true and R is false

D

If both A and R are false

Text Solution

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The correct Answer is:
A
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  2. [A] : SA node is contraction centre or Pace Maker. [R]: Nodal fibre...

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  3. [A] : Acetylchoiine allows a nerve cell to com- municate chemically w...

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  4. A : Transmission of the nerve impulse across a synapse is accomplishe...

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  5. [A] : CO2 is mainly transported in plasma as HCO3^(-) ions [R]: Th...

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  8. Assertion : Lateral line system is found in fishes and aquatic larval ...

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  9. [A]: Parthenogenesis is a type of sexual reproduction. [R]: Because y...

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  10. [A] : Our inner ear contains sense organs for balance movement of flu...

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  11. [A] : Hair cells on the basiiar membrane are responsible for hearing....

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  12. [A]: Thyroid stimulating hormone is smallest peptide hormone. [R]: ...

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  13. Assertion: Aldosterone is a steroid hormone and is important in the co...

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  14. [A] : Cortisol is a protein hormone that regu- lates gluconeogenesis ...

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  15. [A]: A tadpole whose thyroid gland has been removed does not metamorph...

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