Answer: B, frog
Explanation: I took the quiz and got it right a p e x
Answer:
The meaning of force? or gravity pulling the object towards the Earth.
The correct answer is testosterone.
A chemical messenger simply refers to a hormone.
Testosterone is a lipid - based hormone. In fact, it is an anabolic steroid . Steroids are a type of lipid which has four rings of carbon atoms.
Testosterone is a hormone produced by the Leydig's cells in the testes, and which encourages the development male sexual characteristics such as deep voice, a beard, increased muscle mass and bone mass, and growth of hair on the chest.
Oxygen breakdown the food and release energy molecules as ATP
