A patient is about to undergo major surgery. Two hours before the surgery is scheduled to begin the patient experiences "jitters," an elevated heart rate and blood pressure, increased rate of breathing, and cold sweats. What is happening?
What will be an ideal response?
The events indicate the patient is undergoing a "fight or flight" response. The sympathetic nervous system is
activated.
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Ribosomes that are attached to the RER are called "free ribosomes"
Indicate whether this statement is true or false.
The hair cells of the cochlear duct are located in the
A) semicircular canal. B) utricle. C) saccule. D) organ of Corti. E) spiral ganglion.
Which of the following statements regarding protein digestion and absorption is TRUE?
A. Cells in the stomach secrete enterokinase, which breaks down proteins into smaller peptides. B. Pepsin and trypsin are proteolytic enzymes that are most active in an acid pH. C. More acid is secreted during the digestion of a high-protein meal than during the digestion of a meal containing little protein. D. The presence of peptides in the stomach inhibits secretion of gastrin. E. Proteins are too large to pass through the pyloric sphincter into the small intestine.
Which disease below is an inherited condition characterized by the absence of a single lysosomal enzyme called Hex A?
a) Tay-Sachs disease b) leukemia c) progeria d) lymphoma e) Werner syndrome