A group of students has declared a hunger strike to protest a perception of low-quality dorm food. Jose is one of the protesting students and he has not eaten for three days. A blood test reveals that there are high levels of ketones in Jose's blood. These ketones
A. are converted to fatty acids and released into the blood.
B. can be used by the brain as an energy source.
C. are used to synthesize glucose by gluconeogenesis.
D. are a waste product of amino acid metabolism that the kidneys must excrete.
E. are a by-product of anaerobic metabolism.
Answer: B
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Sarah has been diagnosed with pancreatic cancer. The first treatment is to remove 90% of her pancreatic tissue surgically. Due to the loss of exocrine tissue, which of the following foods will Sarah have more difficulty digesting post-surgery?
A. Starches B. Proteins and peptides C. Lipids D. All of these
Sickle-cell anemia can be caused by
a. severe hemorrhage b. damage to blood forming elements in the bone marrow c. a lack of vitamin B12 d. an inherited condition resulting in the formation of abnormal hemoglobin
The surgical removal of bladder stones is __________
Fill in the blank(s) with correct word
An action potential is ________
A) a depolarization of the cell membrane B) a rapid depolarization and repolarization of the cell membrane that is propagated C) a refractory period of the cell membrane D) a repolarization of the cell membrane