During which phase of the crossbridge cycle is ATP split into ADP and Pi?
A. Immediately preceding the resetting of the myosin head
B. Immediately preceding the power stroke
C. Immediately preceding the detachment of the myosin head
Answer: A
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Aldosterone secretion
a. occurs in the kidney b. is stimulated by angiotensin II c. is controlled by the concentration of Cl- d. increases due to a higher-than-normal Na+ concentration in the blood e. allows renin to become activated
A deep, prolonged breath that fills the lungs, believed to be caused by the need to increase the level of oxygen in the blood, is called _____.?
A) ?coughing B) ?hiccups C) ?sneezing D) ?yawning
True or False? Homeostasis and occupying space are both unique characteristics of living things.
Answer the following statement true (T) or false (F)
Type O red blood cells have ________ antigens.
A. A B. B C. oval D. neither A nor B