I believe the answer to that would be B
Regardless of being unicellular or multicellular, any individual form of life capable of growing, metabolizing nutrients, and usually reproducing is an organism.
You need amino acids in your diet every day, since your body doesn't store excess amino acids consumed. If essential amino acids are missing from your diet, your body will start breaking down muscle tissue to access the amino acids that is contains so they can use them elsewhere.
A
diffusion increases because the particles want to go from high consentration to low consentration
