Mifepristone, also known as RU-486, is used in combination with ____ to terminate an unwanted pregnancy
a. copper
b. cyclooxygenase
c. estrogen
d. progesterone
e. a prostaglandin
ANSWER: e
Biology & Microbiology
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Invertebrates have an adaptive immune and an innate immune system
a. True b. False
Biology & Microbiology
What is special about carbon and its chemistry that makes it so important to life?
Biology & Microbiology
Hashimoto's disease is when one has a hypoactive thyroid, or _____.
Fill in the blank(s) with the appropriate word(s).
Biology & Microbiology
Which one of the following choices is true of tRNA?
A. Each tRNA binds a specific amino acid. B. tRNAs are extremely small molecules. C. There are four types of tRNA. D. tRNAs carry special sequences known as codons.
Biology & Microbiology