Which molecular activity requires a folded structure? a. behavior as a nonpolar compound b. function of an active site c. movement through cell membranes d. role as energy storage for the cell

B -  Because an active cell can only work if it has a 3-Dimension structure.

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.

answer: the answer is b