The sympathetic and parasympathetic nervous systems are under conscious control.

Question

The sympathetic and parasympathetic nervous systems are under conscious control. have opposite effects on many common target organs. use identical neurotransmitters. have common ganglia. Chemically-gated/ligand-gated ion channels are found at synapses and would respond to Na ions. neurotransmitters. K ions. neither a, b or c would apply What are antibodies? Generalized protein molecules that are produced the very first stages of a disease infection. during Specialized cells of the immune system that stimulate the production of memory B-cells. Specialized cells of the immune system that directly kill disease-causing cells. Specialized protein molecules that bind to specific antigens helping the immune system to recognize and destroy/deactivate the antigen.

Explanation / Answer

49.Chemically-gated/ligand-gated ion channels are found at synapses and would respond to-

ans- b. neurotransmitters.

(one of the most important instance of chemicalgating is the effect of acetylecholine on the so called acetylecholine channel.acetyle choline opens the gate of this channel.

Acetyle choline is a neurotransmitter.)

50.What are antibodies?

ans- d.specialized protein molecules that bind to specific antigen helping the immune system to recognize and destroy/deactivate the antigen.

( Antibodies are gama globulin protein and it is formed in body when an foreign molecule(Ag) enters in body.then antibody binds to the Ag and recognizes and then destroy or deactivate the Ag by specific mechanism)

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