Which of the following statements about hormones are correct?

(a) hormones can be peptides, steroids, or amino acid derivatives.
(b) hormones can stimulate the synthesis of target proteins through the activation of specific genes.
(c) hormones can directly activate or inhibit enzymes through the action of signal molecules.
(d) hormones can increase the cellular uptake of metabolites.

the answer to your question is b

the cladogram shown here shows similarities and differences among several classes of vertebrates. anatomically, the four have limb structure as their common ancestor. we might separate the mammals from the other three classes because they a) divergent; do not lay eggs b) identical; are warm-blooded c) varied; a four chambered heart d) homologous; have mammary glands