The hormone that creates a sense of hunger is
A. leptin.
B. gastrin.
C. ghrelin.
D. melatonin.
Answer: C
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You are volunteering at a weight-loss clinic. You're in charge of a station that makes individualized recommendations for increasing daily metabolic rate. Which of the following lifestyle changes can increase metabolic rate to the greatest extent?
A. Increasing dietary caloric intake B. Increasing mental activity C. Increasing blood glucose levels D. Increasing skeletal muscle activity E. Increasing environmental temperature
Which of the following is NOT a lymphatic organ?
A. Spleen B. Lymph nodes C. Tonsils D. Thymus
Enzyme regulation by negative feedback involves
A. allosteric facilitation of an enzyme by a substrate of its metabolic pathway. B. occupation of the active site of an enzyme so that it catalyzes less efficiently. C. allosteric inhibition of an enzyme by a product of its metabolic pathway. D. allosteric modification of a substrate by an enzyme of an alternate metabolic pathway. E. enhancement of the active site by a negatively charged substrate.
What is absent in thin skin?
A. The reticular layer B. The stratum corneum C. The stratum lucidum D. The papillary layer E. The hypodermis