Answer:
Gravitropism (also known as geotropism) is a coordinated process of differential growth by a plant or fungus in response to gravity pulling on it. Gravity can be either "artificial gravity" or natural gravity. It is a general feature of all higher and many lower plants as well as other organisms.
Explanation:
I believe the answer to your question would be: Homeostasis.
Eukarya
Cell membrane; separates a cell from its environment. ... Both types are found in the same multicellular organism, but one cell type produces many proteins, and the other does not
Answer:
I'm pretty sure it's a protein building block
