which protein serves as a chemical messenger?\n○ hemoglobin\n○ actin\n○ myosin\n○ insulin
which protein serves as a chemical messenger?\n○ hemoglobin\n○ actin\n○ myosin\n○ insulin
Answer
Answer:
D. insulin
Brief Explanations:
Insulin is a hormone (a type of protein) that acts as a chemical messenger. It regulates blood - glucose levels by signaling cells to take in glucose. Hemoglobin transports oxygen, while actin and myosin are involved in muscle contraction.