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Q. Since neurotransmitters are not consumed in the synaptic process
What are the mechanisms to reduce their concentrations in the synaptic cleft after they have been used?
Since the binding of neurotransmitters to the postsynaptic receptors is reversible after these neurochemicals perform their role they must be eliminated from the synaptic cleft. Neurotransmitters can then bind to specific proteins that carry them back to the axon they came from in a process called as neurotransmitter re-uptake. They can also be destroyed by specific enzymes like acetylcholinesterase an enzyme that destroys acetylcholine. Or they can simply diffuse out of the synaptic cleft.
In the preceding section we emphasised the fact that cvolution or the continuous adaptations to the environment can take place only when pheiiotypes exhibit variability. In the abs
Adaptations to high wind velocity The mechanical force of the wind and the grinding action of sand, dust, snow and other materials driven by it cause the plants to adapt themse
Explain the Properties of Good Prebiotic? Thus, to summarize, we can say that a good prebiotic should have the following properties: Be active at a nutritionally feasibl
Chemical Stress - Atmospheric imbalances At least two components of the environment, oxygen and carbon dioxide that plants require are predominantly in the gaseous form. As yo
Q. How do ascaris obtain food? An ascaris live within the human gut and feed from the food ingested by the infected person.
Where in eukaryotic cells does mRNA synthesis occur? To where do these molecules migrate? Messenger RNA molecules are synthesized within the nucleus, pass by pores of the nucle
What are the main conventional symbols and signs used in genetic family trees? In genetic family trees the male sex is usually shown by a square and the female by a circle. Cro
Q. Evaluate the texture of various foods? A number of instruments are available to evaluate the texture of various foods. Brief discussions on these instruments follow. Cons
If molecules diffuse down their concentration gradient and achieve equal concentration throughout a container or cell, does all movement stop? Explain your answer.
(a) Find the electric potential, taking zero at infinity, at the upper right corner (the corner without a charge) of the rectangle in the figure. (Let y = 3.7 cm and x = 6.7 cm.)
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