Which of the following determines blood type O in the ABO blood typing system?
A) the presence of only N-acetyl-D-galactosamine antigen
B) the presence of only N-acetyl-D-galactose antigen
C) the presence of both N-acetyl-D-galactosamine and N-acetyl-D-galactose antigens
D) the absence of both N-acetyl-D-galactosamine and N-acetyl-D-galactose antigens
D
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Given the following energy profiles, which of the following reactions is endothermic?
R = reactants P = products
A. a B. b C. c D. d E. none of the above
What is the kinematic vorticity number?
What will be an ideal response?
When is the dormant season for most plants in the temperate zone?
A) fall B) spring C) summer D) late fall E) winter
Thunderstorms form when ________, humid air rises in a(n) ________ environment
A) cold; unstable B) warm; stable C) warm; unstable D) cold; stable