Question : [A] :In mammals, ends of presynaptic fibres are enlarged to form synaptic Knobs which are separated by a synaptic cleft from postsynaptic neurons. Each synaptic knob contains many mitochondria and small gran- ule-Iike synaptic vesicles filled with minute packets of the chemical that transmits im- pulses to postsynaptic neurons. [R]: The chemical transmitters are called neurohumors which proportionate to K^+in- flux.

Question : [A] :In mammals, ends of presynaptic fibres are enlarged to

1.	Question : [A] :In mammals, ends of presynaptic fibres are enlarged to form synaptic Knobs which are separated by a synaptic cleft from postsynaptic neurons. Each synaptic knob contains many mitochondria and small gran- ule-Iike synaptic vesicles filled with minute packets of the chemical that transmits im- pulses to postsynaptic neurons. [R]: The chemical transmitters are called neurohumors which proportionate to K^+in- flux.
Answer» If both A and R are true and R is the CORRECT explanation of A If both A and R are true but R is not the correct explanation of A If A is true and R is false If both A and R are false ANSWER :C