Prions are known to cause
A) sickle cell anemia. B) herpes. C) mad cow disease. D) the common cold.
C
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Phylogenetic relationships between prokaryotes are most accurately determined using
A. phenotypic characterizations. B. genotypic information. C. the fossil record. D. carbon dating. E. phenotypic characterizations AND genotypic information.
Sickle-cell anemia is a genetic disease caused by the presence of a faulty hemoglobin gene (HbS). The normal version of this gene is HbA. Which of the following is TRUE about HbS and HbA?
a) It is impossible for a person to carry two HbS genes. b) Hemoglobin genes are always inherited from one's mother. c) People carrying two HbS genes smell like rotten fish. d) They're both alleles for the same trait. e) A person with two HbS genes would be a silent carrier.
When hydrogen and oxygen combine to form water, water would be
a) a product b) a reactant c) both a product and a reactant d) neither a product nor a reactant
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