The atomic number represents the number of __________.
What will be an ideal response?
protons in an atom
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The drug tretinoin (Retin-
A) A) reduces the appearance of fine wrinkles. B) minimizes scarring after surgery. C) stimulates hair growth. D) improves night vision. E) is used to treat dandruff.
Which of the following is a normal hematocrit value?
A. 12.5 mg/dL B. 42% C. 78% D. 5.0 X 106 RBCs/L E. 33 mg
Descent of the testes is stimulated by the ________
A) presence of the X chromosome B) presence of estrogens C) presence of testosterone D) presence of Y chromosome E) absence of the X chromosome
Which of the following columns of erectile tissue is composed of smaller spaces?
A. Corpora spongiosum B. Corpora cavernosa C. Both columns have smaller spaces. D. Neither column has smaller spaces.