Neurotransmitters can affect postsynaptic cells by causing molecular changes in the cells.
The term "chemical messengers of the body" is frequently used to describe neurotransmitters. The nervous system uses these molecules to send information between neurons or from neurons to muscles. A neurotransmitter influences a neuron in one of three ways: excitatory, inhibitory or modulatory.
When a stimulus is potent enough, the chemical messenger neurotransmitter is transferred into the nerve impulse. If it is powerful enough, it will reach the postsynaptic cell and affect the structure of the neuron. And when signal transduction happens, everything mentioned above is completed.
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Transcription is initiated when the RNA Polymerase binds to promoter region and transcription is ended when RNA Polymerase binds to termination sequence.
Promoter consensus sequence is important as it is the ideal promoter sequence and is used to judge the promoter's strength. The consensus sequence can be different for different group.
Transcription is the process of forming mRNA from DNA for the purpose of protein synthesis. The initiation occurs when the polymerase binds the promoter and stops when binds the terminator sequence.
Promoter consensus sequence is a sequence that is ideal as promoter. It is a theoretical sequence and the sequence most close to it is considered to be better. We can find different consensus sequence.
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It prevents harmful substances from entering a cell
