Under an electron microscope, the plasma membrane appears as a trilaminar structure consisting of two light layers separated by a dark middle layer
Indicate whether the statement is true or false
F
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Each of the following organs is part of the urinary system except the
A) kidney. B) urinary bladder. C) rectum. D) ureter. E) urethra.
Three discrete types of muscle fibers are identified on the basis of their size, speed, and endurance. Which of the following athletic endeavors best represents the use of red fibers?
A) a sprint by an Olympic runner B) a long, relaxing swim C) playing baseball or basketball D) mountain climbing
Most societies are consistent in:
A. recommending that masturbation be taught to children. B. encouraging masturbation if done in private. C. condemning masturbation at any age. D. showing some disapproval of adult masturbation.
Sodium homeostasis leads to the homeostasis of ________________
A. chloride B. hydrogen C. calcium D. potassium E. magnesium