You have a hypothetical hormone and the only thing you know about it is that it is synthesized and secreted on demand. What are some other characteristics that you can infer about it?
A. it will bind to receptors located in the cell, it has a short half-life, activates (or inactivates) genes, needs a carrier protein when travelling in the plasma
B. it will bind to receptors in the membrane, it will have a short half-life, dissolved in plasma, modifies other enzymes
C. it will bind to receptors located in the cell, it has a long half-life, activates (or inactivates) genes, does not need a carrier protein when travelling in the plasma
D. it will bind to receptors in the cell, it will have a long half-life, needs a carrier protein when travelling in the plasma, activates (or inactivates) genes
E. you need more information