Four of the five answers listed below are related by a unifying characteristic. Select the exception
a. ionic bond
b. covalent bond
c. polar bond
d. hydrogen bond
e. cluster of nonpolar groups
E
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Bryophytes are the only group of land plants that produce swimming sperm
A. true B. false
Pregnant women are advised to avoid eating tuna, due to the presence of ____, which can impact prenatal brain
development.
a. copper b. mercury c. nicotine d. bisphenol-A (BPA) e. fluoride
In the 1970s, children’s pajamas were treated with a(n) ____________________ called tris-BP. Fill in the blank(s) with the appropriate word(s)
Which of the following statements concerning enzymes is FALSE?
a. Each enzyme has an optimal temperature. b. Each enzyme has an optimal pH. c. Most enzymes are highly specific. d. Some enzymes require cofactors. e. Most enzymes are RNA molecules