Which of the following is true of the spatial distribution of the hydroxyl groups of b-D-glucopyranose?
A) They are all in axial positions.
B) They are all in equatorial positions.
C) The hydroxyl on C-1 is axial, those on C-2, C-3 and C-4 are equatorial.
D) The hydroxyl on C-1 is equatorial, those on C-2, C-3 and C-4 are axial.
B
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All of the following are sustainable development goals agreed to by member countries of the United Nations EXCEPT
A. provide productive employment for all. B. eliminate war. C. end poverty. D. sustainably use land and ocean resources.
Nuclear fusion reactions
A) were used in the atomic bombs dropped on Japan in 1945. B) require conditions that are not yet cost-efficient for the generation of electricity. C) are widely used today in nuclear power plants. D) can only occur in the special conditions of the sun and stars.
In terms of plate tectonics, India is a part of the ______ plate.
a - Indo-Australian b - Euroasian c - Arabian d - African e - Trasmanian
The number of domesticated livestock in 2011 was over ________, more than ________ times the human population
A) 27 billion; 3 B) 15 billion; 2 C) 10 billion; 1.5 D) 3 billion; 0.5