Answer:
The intracellular molecule produced by the receptor ligand complex is called Second messenger.
Explanation:
Receptors are membrane bound proteins which bind to the ligands which are also called first messengers and cause cellular changes. These intracellular changes are mediated by second messengers such as proliferation, differentiation, migration, apoptosis, transcription, contractions etc. They are specific for specific first messengers such as homones and growth factors. They relay the signals between the ligands to their target molecules in the cytosol or nucleus. Most common second messengers are cAMP, cGMP, DAG, IP3.
Signal amplification by second messenger can be explained by the example of IP3 which cayses the release of Calcium ions from the intracellular stores and cause contractions.
The answer should be amphetamine a dopamine release agent that triggers the
Tonicity is responsible for determining which direction water will diffuse across the plasma membrane of cells.
A. a piece of DNA that controls a trait
Nucleus
Nucleic acids, plasmids, and, rarely, thylakoids can be found in prokaryotic cells.
