Which of the following is true of immunoglobulins?
A) Only the heavy chains have both constant and variable regions.
B) Only the light chains have both constant and variable regions.
C) Both light and heavy chains have both constant and variable regions.
D) There are no constant regions in any immunoglobulin chains.
C
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Which of the following groups is most likely to disrupt local ecosystems as they search for natural resources and manufacturing sites?
A) international organizations such as the United Nations B) governments C) non-governmental organizations, such as Greenpeace D) indigenous ethnic groups E) transnational firms
For every integer increase of magnitude on the Richter Scale, ____________________ times more
energy is released by the earthquake. Fill in the blank(s) with the appropriate word(s).
Shields are ____
A)composed of igneous, sedimentary, and metamorphic rocks B)composed of sedimentary and metamorphic rocks C)composed of limestone and quartz D)regions of the continents where basement rocks are widely exposed E)regions of the continents where basement rocks are deeply buried
What is the IUPAC name of propyl isobutyl ketone?
A) 4-octanone B) 2-methyl-4-heptanone C) 3-methyl-4-heptanone D) 2,2-dimethyl-3-hexanone