The neutral subatomic particle is the ____
a. neutron
b. proton
c. electron
d. quark
e. Higg's boson
ANSWER: a
Biology & Microbiology
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Systemic lupus erythematosus (SLE) is an example of a disease caused by type ________ hypersensitivity
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Black smokers produce a fluid rich in:
a. copper sulfides. b. iron sulfides. c. zinc sulfides. d. magnesium sulfides. e. sodium chloride.
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Both prokaryotes and eukaryotes have which of the following?
a. Ribosomes b. A true nucleus c. Plasma membranes d. Membrane-bound organelles
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A closed circulatory system is seen in:
a. leeches only b. roundworms only c. flatworms only d. cnidarians only e. both earthworms and leeches
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