Hormones deliver their signal to target cells in different ways depending on their chemical structure. Which of the following statements about the classes of hormones are true?
1)Peptide hormones are derived from amino acids and bind to cell surface receptors.
2)Steroid hormones are derived from cholesterol and bind to intracellular receptors.
3)Amino acid-derived hormones are derived from tyrosine or tryptophan and bind to cell surface receptors.
4)All of the above