How is hunger regulated?
What will be an ideal response?
The hormone ghrelin, produced in the gastric cells of the stomach, stimulates the lateral hypothalamus, stimulating hunger. Ghrelin concentrations rise in the blood before a meal. Ghrelin travels through the blood to the hypothalamus, where it activates neuropeptide Y to stimulate hunger. The production of ghrelin changes throughout the day. More ghrelin is produced between meals, during sleep, or when you fast. This increase in ghrelin production signals the hypothalamus that the body needs energy. Ghrelin levels drop following a meal, especially one that contains high amounts of carbohydrate and/or kilocalories. This drop in ghrelin levels signals satiety and decreases the urge to eat.
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One type of chemical reaction that joins molecules together is called _____
a. acidification b. hydrolysis c. condensation d. compounding
Samuel is a 35-year-old man. He weighs 180 lb (81.6 kg) and is 55 in (1.4 m) tall. He works as a programmer and has a fairly sedentary lifestyle. In the context of the relation between body mass index (BMI) and weight-related mortality, Samuel is at a _____ risk of weight-related mortality
A) very low B) low C) high D) very high
The Dietary Guidelines recommend some shifts in the diets of Americans. Drag each dietary component to its appropriate column to indicate whether Americans should eat more or less of that food or food component.
What will be an ideal response?
During protein formation, if an essential amino acid is missing, the remaining amino acids are converted into:
A) glucose. B) protein with missing amino acids. C) fat. D) protein that is then stored in the liver. E) a and c