A ________, a ________, and a ________ are the major parts of a nucleotide, whereas a ________ and a ________ are the major parts of a nucleoside.
Fill in the blank(s) with the appropriate word(s).
Phosphate group, sugar (ribose or deoxyribose), base (in any order); sugar, base (either order)
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Lipopolysaccharide is comprised of three moieties (lipid A, core oligosaccharide, and O-antigen), which require ________ biosynthetic pathway(s).
A. six B. one C. two D. three
____ represents the complementary strand of DNA for gene segment GCCAATGCT.
A. CGGUUACGA B. CGGTTACGA C. GCCAATGCT D. GCCAAUGCU
The oldest proposed cell microfossils come from structures called _____.
A. stromatolites B. crystal filaments C. hydrothermal vents D. pyrite E. tectonic plates
Which sex should show mate choice?
a) Always males b) Always females c) The sex having higher parental investment d) The sex having lower parental investment e) Neither sex