When glucose levels are low the hormone glucagon causes the conversion of glycogen back to glucose. D Its concentration in the blood increases after a high-carbohydrate meal. Answer Key Lo 2 3 Which Of The Following Best Explains Why Energy Cannot Cycle Through An Ecosystem A The Law Of Conservation Of Energy B The Second Ppt Download Hormones as a general class are chemicals produced by the endocrine system that. . How are hormones distributed to tissues and what determines which cells hormones will affect. B It acts on skeletal muscle liver and adipose tissue. C It acts primarily on the liver and adipose tissue. B It acts on skeletal muscle liver and adipose tissue. They are carried throughout the body in the bloodstream and each hormone affects target cells that have receptors for it. The following table describes several molecules and their functions. C It acts primarily on the liver and adipose tissue...