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The root cortex is composed mostly of collenchyma cells.
Enzyme-Linked Receptor
A type of cell surface receptor that, upon binding to its ligand, activates an intracellular enzyme, initiating a signal transduction pathway.
G Protein
A group of proteins functioning as cellular molecular switches, responsible for relaying signals from external stimuli to the inside of a cell.
Local Regulator
A molecule that communicates between cells in close proximity to regulate processes such as growth, development, and inflammation.
Paracrine Regulation
A form of cellular communication where cells release signals that affect nearby target cells in the immediate environment, regulating their behavior.
Q13: Figure 40-3 <img src="https://d2lvgg3v3hfg70.cloudfront.net/TBX8677/.jpg" alt="Figure 40-3
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