In the situation above, what substance(s) will move? In which directions (into or out of the
cell)?

hormones in blood stream

image: dtc.ucsf.edu

endocrine glands secrete hormones into the blood stream near them; the hormones then travel in our bloodstream until it reaches its destination, called a target cell, in distance parts of the body. in the target tissue, hormones lock onto the target’s plasma membrane, called the receptor site.

because the light is a great source of energy for the plants to survive. (i hope this )