Prions are
A) the site of protein synthesis in prokaryotic cells.
B) simple viruses composed of protein.
C) primitive protein particles that are believed to be an ancient precursor of living cells.
D) infectious circular RNA molecules that replicate in host cells.
E) infectious misfolded proteins that cause normal protein molecules to misfold.
Correct Answer:
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Q9: Which sequence reflects the locations that a
Q10: Which of the following processes would be
Q11: Which of the following organelles is not
Q12: Membrane proteins may function in
A)receiving extracellular signals.
B)amphipathic
Q13: Eukaryotic cells are believed to have arisen
A)from
Q15: Which of the following is characteristic of
Q16: The smooth endoplasmic reticulum functions in synthesis
Q17: The methanobacteria,halobacteria,and sulfobacteria are included in which
Q18: Experiments by Stanley Miller in the 1950s
Q19: Some researchers have hypothesized that type II
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