Urine formation involves
A. filtration of the plasma.
B. reabsorption from the filtrate.
C. secretion into the filtrate.
D. production of red blood cells.
E. filtration of the plasma, reabsorption from the filtrate, and the secretion into the filtrate.
E
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Which of the following statements is true of graded potentials?
A) They travel over long distances. B) They have different amplitudes. C) They are typically found in axons. D) They travel without decrement.
The chemical symbol O?O means ________.
A) zero equals zero B) both atoms are bonded and have zero electrons in the outer orbit C) the atoms are double bonded D) this is an ionic bond with two shared electrons
The component that constitutes the largest percentage of body weight is
a. protein b. H2O c. Na+ d. carbohydrate e. phospholipid
Puberty in females occurs _____ than in males
A. earlier B. later C. at the same time