Question

Below is a diagram illustrating how cells at the bottom of the early embryo are releasing chemicals to nearby cells: a diagram representing how some embryonic cells release signaling molecules that are absorbed by nearby cells. if the signal is absorbed by the cell, it is transferred through the signal pathway into the nearby cells nucleus. what is the primary reason the signaling molecule is not received by every cell nucleus? all chemicals are absorbed by each cell, but only some enter the nucleus. chemicals are only released at predetermined times. signal pathways block some chemicals from transferring through the cell. signal-receiving cells may lack correct receptors.

Answer 1

The primary reason signaling molecules are not received by every cell nucleus is because some signal-receiving cells may lack the correct receptors.

Step-by-step explanation:

The primary reason the signaling molecule is not received by every cell nucleus is because signal-receiving cells may lack the correct receptors. Receptors are proteins that bind to signaling molecules and initiate a response in the target cell. Each cell has a variety of receptors, allowing it to respond to different stimuli. Some receptors can bind several different ligands, but typically, a receptor will only bind to its specific ligand. Therefore, if a cell does not have the receptor for a specific signaling molecule, it will not receive the signal.