Body chemicals that regulate sleep, moods, hunger, and stress are called hormones
<u>Explanation:</u>
These hormones are a type of proteins that are secreted in the body as in response to various activities that happen in a body. They do not have a separate pathway system they just flow along with the blood.
They serve as a communication tool between tissues. The glands which secrete these proteins are termed as endocrine glands. If these hormones affect the same cell they are called as autocrine and different cells are called as exocrine.
Answer:
Explanation:
In this lesson we will learn the three basic parts of all cells. Cells have something called a cell membrane, a nucleus, and cytoplasm.
The answer is B) it is Rigid
