Hormones are . See Concept 45.1 (Page) View Available Hint(s)for Part A signals that must interact with DNA in order to be effective chemical signals between cells, transported in blood or hemolymph always proteins are all under the control of the pituitary gland produced only in response to environmental stress

The correct answer is - chemical signals between cells, transported in blood or hemolymph

Explanation:

Hormones are chemicals that make communication between cells and transfer the signals to various target cells. These are transported through the blood and lumph in their respective circulation so signals can reach to the surface or within the target cells and perform specific functions.

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image result for how many calories of energy will 20 grams of carbohydrates provide in one gram provides 4 calories

consuming the right balance of protein, carbohydrates and fat can you maintain a healthy weight and optimize your energy levels. protein and carbohydrates both contain 4 calories per gram, while fat provides 9 calories per gram.