Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
NEST2020BiologyNeural Control and Coordination

Hydra has a receptor Q in certain cell/s that respond to a specific neurotransmitter P1, isolated from brains of higher mammals. An experimenter finds that many species have neurotransmitters that are structurally related to P 1 and have functional homologs of receptor Q . Binding of P to Q elicits neuronal response. A summary of this study is given below. array |c|c|c| species & number of Q genes & response to P gro

Options

  1. AIn mammals, P3 can compete with P1, P2, P4 for eliciting the response.
  2. BInsects might have lost the gene Q due to the loss of endogenous production of P group of neurotransmitters.
  3. CInsects have lost the gene Q after fish have evolved.
  4. DIn mammals, the Q gene multiplication occurred as a result of diversification of the neurotransmitter P .

Correct answer

D. In mammals, the Q gene multiplication occurred as a result of diversification of the neurotransmitter P .

Step-by-step solution

No solution available.

Practice Neural Control and Coordination on Quantrex Academy →

More from Neural Control and Coordination

Unipolar neurons are found usually in the embryonic stage. They have 2026Events occurring during signal propagation in a chemical synapse are given below. P: Postsynaptic membrane potential changes. Q: Synaptic vesicle fuses with the presynaptic membran 2026In the axon of a giant squid neuron, (i) The resting membrane potential is -70 mV. (ii) At the equilibrium potential of Na ^+ ( E_ Na ^+ = +55 mV) there is no net movement of Na ^+ 2026Interneurons play an important role in the execution of spinal cord-mediated reflex action. Where are these interneurons located? 2022The correct path of transmission of electrical impulse in a nerve cell is: 2022Graphical representation of action potential across the membrane of a neuron is shown below. The different stages of the action potential are shown with numbers 1 to 5 . Choose the 2020Each neuron has a cell body, axon, and dendrites. The dendrites are the protoplasmic extensions of the nerve cell. The axodendritic type of chemical synapse is formed by the associ 2019What are Association areas? 2018 Full Neural Control and Coordination list All NEST PYQs