Your friend suffers from heartburn and was told that he should "stop drinking caffeinated coffee because it is acidic." Explain to your friend why this is good advice but explain the mistaken facts to him
What will be an ideal response
Coffee's pH does not cause heartburn. However, caffeine can promote the release of gastrin hormone from G-cells in the stomach. Release of gastrin will result in the greater production of stomach acid that could worsen the pain of heartburn.
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Which of the following is an example of a suspension?
A) cytoplasm B) salt water C) rubbing alcohol D) blood
The glomerular filtrate
a. is a protein-free plasma. b. is formed as a result of passive forces acting across the glomerular membrane. c. does not contain foreign compounds because these substances are secreted by special transport mechanisms in the proximal tubule instead. d. both (a) and (b) above. e. all of these answers.
Tom is on a health kick and wants to make sure that he is always in balance in terms of total body water. Which of the following is important for him to keep in mind?
A. He must ingest more water than is lost in the urine. B. The water filtered into Bowman's capsule must be 100% reabsorbed. C. The amount ingested plus that metabolically produced must equal the amount of water in the urine. D. He must ingest more water than is lost by all output pathways combined. E. He must ingest less water than is lost in the urine.
The conversion between different states of energy (e.g. potential energy to kinetic energy)
A. is not 100% efficient. B. typically generates heat. C. is not 100% efficient and typically generates heat. D. is 100% efficient. E. is not possible; energy cannot change its state.