When facing potential threats, how does the endocrine system assist the immune system? A. The endocrine system releases hormones to prepare the body for response. B. The endocrine system increases breathing rate and blood flow.
C. The endocrine system gives a physiological reaction in response.
D. The endocrine system allows for movement in coordination with the muscles.​

enzyme active site and substrate specificity

enzymes bind with chemical reactants called substrates. there may be one or more substrates for each type of enzyme, depending on the particular chemical reaction. in some reactions, a single-reactant substrate is broken down into multiple products

colors do exist. the color of the sky is actually violet; humans percieve the color of the sky as blue.