The figure shows a signaling pathway for epinephrine, a signaling molecule that can bind to an alpha-1 receptor. True or false? Once activated, protein kinase C activates glycogen synthase.

A cell responds to two types of signaling molecules. Estrogen is a signaling molecule that binds to an intracellular receptor known as an estrogen receptor (ER), ultimately causing gene expression. Insulin-like growth factor 1 (IGF-1) is a signaling molecule that binds to a membrane receptor (IGF-1R). Upon binding to IGF-1R, a molecule of IGF-1 activates a signaling pathway that can phosphorylate ER, enhancing the rate of gene expression caused by estrogen alone. The figure shows the integration of the two signaling pathways. Which cellular responses should occur in the presence of estrogen and absence of IGF-1? Select all that apply.

A hydrophobic signaling molecule is likely to bind to a __________ receptor.

The figure shows a signaling pathway for epinephrine, a signaling molecule that can bind to an alpha-1 receptor. Which molecule directly inhibits glycogen synthase?

The top figure shows four signaling pathways, labeled 1 through 4. All pathways begin with the same receptor being triggered by the same signaling molecule. However, the secondary messengers that follow are ordered differently among the pathways. The bottom figure shows a relationship between the presence or absence of an activated protein W and the activity of protein Y. Which signaling pathways are consistent with the data presented in the bottom figure? Select all that apply.

The top figure shows four signaling pathways, labeled 1 through 4. All pathways begin with the same receptor being triggered by the same signaling molecule. However, the secondary messengers that follow are ordered differently among the pathways. The bottom figure shows a relationship between the presence or absence of an activated protein X and the activity of protein W. Which signaling pathways are consistent with the data presented in the bottom figure? Select all that apply.

The figure shows a signaling pathway for epinephrine, a signaling molecule that can bind to an alpha-1 receptor. True or false? Once activated, calmodulin activates IP3.

Which statements accurately describe a hormone? Select all that apply.

Which statements accurately describe hydrophobic signaling molecules? Select all that apply.

Only three of the following statements are accurate. Which statement is inaccurate?