How do prions enter a host and cause disease?
a. Prions are carried by parasites that transmit the infectious prion particle through bites.
b. Pathogenic prions promote the conversion of native prion proteins to cause disease.
c. The host organism contains a gene that encodes for the same protein as the prion.
d. Both b and c are correct.
Answer: D
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Biomes are broad regional areas with defined flora and fauna. Which one of the following choices correctly identifies the biomes shown plotted in the graph of precipitation versus temperature? 
A. Tropical Rain forest = 3; Desert = 4; Tundra = 1; Grassland = 2 B. Tropical Rain forest = 1; Desert = 3; Tundra = 4; Grassland = 2 C. Tropical Rain forest = 1; Desert = 2; Tundra = 3; Grassland = 4 D. Tropical Rain forest = 3; Desert = 1; Tundra = 2; Grassland = 3
Diagram an atom of nitrogen (which consists of 7 protons, 7 neutrons, and 7 electrons). Be sure to indicate in your illustration the relative size, position, and charge of the subatomic particles
What will be an ideal response?
Which of the following is an example of solid phase bioremediation?
A) Composting B) Bioventing C) Slurry phase D) Phytoremediation E) All of the above
What is an advantage of closed circulatory systems?
What will be an ideal response?