An increase in extracellular H+ concentration may result in ________ extracellular K+.
A. decreased
B. no change in
C. increased
Answer: C
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The structure that functions as a diaphragm to control pupil size is the
A. anterior chamber. B. suspensory ligament. C. cornea. D. iris. E. ora serrata.
Once the promoter region of a gene is activated, ________ unwinds the DNA of the downstream gene and begins the process of ________. What is the molecule generated by this process? How does the cell control the amount of this molecule released from the nucleus?
What will be an ideal response?
Square knots easily pull apart
Indicate whether the statement is true or false
As you are lifting a box, someone places extra weight on top of it. For your muscle to continue contracting and lifting the box, the muscle must
A. lower its threshold. B. shift from isometric to isotonic contraction. C. recruit more muscle fibers. D. reduce its wave summation. E. shift from slow-twitch to fast-twitch mode.