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?
Thunderstorms form when ________, humid air rises in a(n) ________ environment
A) cold; unstable B) warm; stable C) warm; unstable D) cold; stable
When is the dormant season for most plants in the temperate zone?
A) fall B) spring C) summer D) late fall E) winter