Answer:
Endocytosis
Explanation:
Some molecules that are required by a cell are so large that they cannot pass into a cell by either the cell membrane or by any carrier protein. These molecules are transported into the cell by the process named as endocytosis.
In this process, the cell membrane forms a vesicle, a membrane-bound sac, around the large molecule. Then, the vesicle pinches the molecule into the cytoplasm of the cell. Energy is required for this process to occur.
Stimuli (usually) activate one or more of the senses. Stimuli can be internal as well as external. Internal stimuli signal the state of the body. ... Some examples of internal stimuli: the feeling you describe as hunger, the churning sensation you experience when anxious or afraid.
Hmm not sure but I would give a explanation..