Question

complete the following sentence. select the best answer.
the name of the chemical messenger secreted by fat cells that gives you a feeling of fullness and satisfaction is blank.
answer 2 points
o leptin
o serotonin
o thyroxine

Explanation:

Leptin is a hormone secreted by fat cells (adipocytes). It acts on the hypothalamus in the brain to regulate appetite and energy balance. When leptin levels are high (indicating sufficient fat stores), it signals the body to reduce food intake and increase energy expenditure, giving a feeling of fullness. Serotonin is a neurotransmitter involved in mood, sleep, etc., not specifically secreted by fat cells for fullness. Thyroxine is a thyroid hormone that regulates metabolism, not related to the described function.

Answer:

leptin