Which of the following is a major difference between RNA and DNA? RNA
a. has guanine instead of cytosine
b. has adenine instead of cytosine
c. has uracil instead of thymine
d. has cytosine instead of thymine
C
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Vaginal spermicides most be inserted no more than how long before intercourse?
A. 30 minutes B. 45 minutes C. 60 minutes D. 90 minutes
The nurse is giving a lecture on medications and the many variables that affect the efficiency of drugs being processed by the body. Which of the following are considered variables? (Select all that apply.)
a. socioeconomic status b. age and weight c. gender d. psychological state e. Climate
The human body responds to stress by producing more catecholamines, which ____
a. produce a calming effect b. decrease blood glucose c. decrease blood pressure d. increase heart rate e. relax the muscles
Which of the following is the active drug in alcoholic beverages?
A. methanol B. ethanol C. proof D. isopropyl