Which hormone, when present in a human female's urine, indicates a pregnancy?
a. estrogen
b. luteinizing hormone
c. human chorionic gonadotropin
d. progesterone
Ans: c. human chorionic gonadotropin
Biology & Microbiology
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Scientists have found that extinction rates among ____ are accelerating rapidly
a. endangered species b. trigger species c. bird species d. amphibian species e. plant species
Biology & Microbiology
Which of the photographs in the above figure represents the bryophyte?
a. A b. B c. C d. D e. both B and C
Biology & Microbiology
The stem apical meristem gives rise to:
a. leaf primordia. b. lateral meristems. c. root caps. d. root hair
Biology & Microbiology
Green plants are able to convert water and carbon dioxide into sugar and store it as _____.
Fill in the blank(s) with the appropriate word(s).
Biology & Microbiology