The control in an experiment ____
a. makes the experiment invalid
b. is an additional replicate for statistical purposes
c. reduces experimental errors
d. minimizes experimental inaccuracy
e. allows a standard of comparison for the experimental group
ANSWER: e
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An advantage of sexual reproduction over asexual reproduction is that sexual reproduction
A) takes less time B) requires more time C) provides genetic diversity D) produces identical offspring
Ion channels are classified as membrane transport proteins. Channels discriminate by size and charge. In addition to Na+, which one of the following ions would you expect to be able to freely diffuse through a Na+ channel? Explain your answer
(a) Mg2+ (b) H+ (c) K+ (d) Cl–
Almost as much evidence exists to support the hypothesis of transformation as the theory of common descent
Indicate whether the statement is true or false
Methane is usually released directly to the atmosphere in environments without an overlying ________ water zone.
Fill in the blank(s) with the appropriate word(s).