q6 three chemicals were found in the body. p: it was released by liver cells into the blood. on reaching a cell of another organ, it was consumed to release energy.
q: it was released by the stomach cells in the stomach. it helped in digesting the proteins.
r: it was released by the pancreatic cells into the blood. on reaching a cell of another organ, it made the cell release another chemical. which of the chemical(s) could be a hormone(s)?
1 only p 2 only r 3 both p and r 4 all - p, q and r​