The Roux-en-Y gastric bypass procedure produces weight loss by
a. reducing plasma leptin levels.
b. decreasing plasma ghrelin levels.
c. decreasing plasma PYY levels.
d. increasing plasma PYY levels.
e. increasing plasma CCK levels.
Question 2
Which of the following is true of leptin?
a. Leptin is a product of protein metabolism.
b. Leptin levels are decreased during overeating and obesity.
c. Mutations of the leptin gene are the most common cause of obesity.
d. Plasma leptin levels are related to body fat content only in obese persons.
e. Obese humans have high plasma leptin levels and are insensitive to leptin injection.
Insulin promotes the transport of glucose across plasma membranes.
An electrocardiogram (ECG, EKG) is a commonly used procedure in which the electrical events associat
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Comparison of loss- and gain-of-function alleles