Respuesta :
Answer:
The correct answer would be a lipid-soluble signal.
Signal transduction refers to the set or cascade of bio-chemical reactions take place in a cell in order to transmit the chemical or physical signal from outside the cell to inside target molecule.
It is usually initiated by receptors present on the membrane of the cell which sense the extracellular stimulus (such as ligand, hormone, pressure, temperature, pressure etc). Once activated, these receptors activate the cascade of reaction which ultimately reaches the target molecule and produces a cell's response.
In contrast, the lipid-soluble signals (such as steroidal hormones, thyroid hormone etc) enter the cell membrane without any hindrance. They directly bind to intra-cellular receptor present in the cytoplasm or on the nuclear membrane.
The hormone-receptor complex then enters the nucleus and act as transcription factor and produces the response in the form of transcription.
The signals between the cells of the organism are called intercellular signalling. A lipid-soluble signal would be processed without transduction.
What is signal transduction?
A series of cascades that includes biochemical reactions are called signal transduction. It occurs in the cell form transmitting the physical and chemical signals from the outer environment to the targeted cells.
The extracellular stimuli initiate and interact with the membrane receptors present in the cell. The activation of these receptors initiates the chemical cascade of the reactions targetting the molecule of interest.
Lipid soluble molecules can travel and cross the membrane without any transduction signals and directly bond and interact with the receptors.
Therefore, option B. a lipid-soluble signal can process without transduction.
Learn more about signal transduction here:
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