Parathyroid hormone ________.
A. increases the body's rate of potassium excretion
B. enhances the body's ability to retain calcium
C. signals osteoblasts to release calcium from bones
D. enables glucose to enter cells
Answer: B
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Which of the following is NOT a genetic factor that has been implicated in the development of obesity?
A. Leptin resistance B. Lower levels of nonexercise activity thermogenesis (NEAT) C. Decreased levels of growth hormone D. Increased resting energy expenditure (REE)
While waiting for a prescription to be filled, Dan decides to measure his blood pressure using the automated machine in the pharmacy. His blood pressure reading is 140 over 92 millimeters of mercury. He knows he has a few pounds to lose but has never known his blood pressure. Before returning home he goes to a fast-food restaurant and enjoys a cheeseburger and fries. At home, Dan tells his wife,
Tracy, about his findings and waits for her response. Let's see if you know as much as Tracy about the implications of blood pressure.While out for dinner with Tracy, what choice would help Dan lower his sodium intake? a. Order Asian cuisine without heavy cream sauces. b. Use ketchup on his food rather than mayonnaise. c. Request his food be cooked with spices such as MSG. d. Order an omelet made with fresh tomatoes and herbs instead of ham. e. Use the salt shaker at the table and add salt according to personal taste.
Phil is a participant in a study designed to examine the effects of taking a new protein-containing product on muscle tissue development. Phil suspects he's in the experimental group, because he's certain his muscles are bigger and stronger as a result of taking the product supplied by the researchers. When the study is completed, Phil learns that he didn't receive the new source of protein. Phil thinks the researchers made a mistake-he's certain his muscle mass increased while he consumed the product. According to this information, Phil's belief that his physical condition improved while he participated in the study is an example of
A. participant fatigue. B. an anecdotal report. C. human subject bias. D. the placebo effect.
What is the most common reason that vitamin B12deficiency occurs in older adults?
A. Diets are frequently low in vitamin B12since oral problems and financial difficulties limit meat intake and meats are the best dietary sources of B12. B. The elderly have an inefficient digestive system and slow metabolism. C. Their diets primarily provide synthetic forms of vitamin B12, which are less absorbable than the protein-bound form found naturally in foods. D. The elderly have a higher incidence of bacterial overgrowth, which decreases the secretion of hydrochloric acid. E. B12supplements are expensive, and many older adults cannot afford them.