Carbon-12, Carbon-13 and Carbon-14 are examples of:
A. ions
B. isomers
C. molecules
D. isotopes
D. isotopes
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The process by which soil bacteria convert NH3 or NH4 to nitrate (NO3-) is called
A. assimilation. B. denitrification. C. Decomposition. D. nitrification. E. ammonification.
Network of DNA strands and associated proteins observed within a nucleus of a cell.
What will be an ideal response?
Compare and contrast infection with Taenia saginata and Echinococcus granulosus in humans, including the consequences of the infections.
What will be an ideal response?
When an organism dies, its muscles remain in a contracted state termed rigor mortis for a brief period of time. Contributing most directly to this phenomenon is
A. the lack of calcium to bind to troponin. B. the absence of an oxygen supply to muscle. C. the inability to synthesize actin and myosin. D. the lack of ATP to break cross-bridges between thick and thin filaments.