Which of the following is true of the glycosidic bonds in heparin?
A) They are all a(1 ? 4).
B) They are all b(1 ? 4).
C) The a(1 ? 4 ) and b(1 ? 4)bonds alternate.
D) None of the above is true.
C
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A small pellet is accelerated in space by a 10-N force. Suddenly, the pellet encounters a second 10-N force in the opposite direction. With both forces acting, the pellet
A. continues at its speed just before encountering the second force. B. theoretically tends to accelerate without limit. C. is brought to a rapid halt. D. decelerates gradually to a halt.
From an age-sex pyramid for the USA (2000), it is clear that the largest age group is ________ years old
A) 0-15 B) 15-35 C) 35-55 D) 55-75
Climatologists recorded the temperature and pH of the oceans in more than 1,000 locations for more than 30 years. The results indicate that the oceans are warming and that the pH is dropping. This is an example of
A) political action. B) stewardship. C) sound science. D) sustainability.
Water depth increases over a continental shelf to the outer edge depth of ________ to ________ meters.
A. 500; 600 B. 200; 300 C. 100; 200 D. 400; 500 E. 300; 400