The body's "natural opiates" used to reduce the ability to perceive pain are
a. glucocorticoids.
b. mineralocorticoids.
c. endorphins and enkephalins.
d. endorphins only.
e. enkephalins only.
C
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Behaviors that appear to be genetically programmed are called
A. innate. B. ultimate. C. fixed action pattern. D. voluntary. E. standard deliverance.
Pulsed-field gel electrophoresis can be used to link a particular pathogen associated with disease outbreaks in a specific food source.
Answer the following statement true (T) or false (F)
Meiosis typically results in the production of
a. 2 diploid cells. b. 4 diploid cells. c. 4 haploid cells. d. 2 haploid cells. e. 1 triploid cell.
Without proofreading, the rate of errors in DNA replication in bacteria is as high as about one for
every ____ nucleotides assembled.
a. 10 to 100 b. 100,000 to 1,000,000 c. 1000 to 10,000 d. 10,000,000 to 100,000,000 e. 100,000,000 to 1,000,000,000