____________ is a hormone produced by the stomach. Its levels rise before and fall after meals, which may provide a short-term signal to eat.
A) Leptin
B) Ghrelin
C) Cholecystokinin (CCK)
D) Glucagon-like peptide 1
Question 2
____________ levels fall when fat stores fall, which may provide a long-term signal to eat more.
A) Leptin
B) Ghrelin
C) Cholecystokinin (CCK)
D) Agouti-related peptide