Which of the following is a pyrimidine found only in RNA?
A) thymine
B) cytosine
C) uracil
D) adenine
E) glycine
Ans: C) uracil
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The anaerobic organisms used in sewage treatment may produce the useful product(s)
A. oxygen. B. nitrogen. C. carbon monoxide. D. methane. E. nitrogen AND carbon monoxide.
The amount of energy released from a glucose
molecule is dependent on what happens to
a. carbon atoms. b. oxygen atoms. c. hydrogen atoms. d. phosphorus atoms. e. water molecules
Although prion infectious agents are more closely related to viruses than any other kind of infectious agents, there are still some major differences between the two. Which statement describes a major difference?
A. Viral infections can always be treated and cured, whereas prion diseases cannot. B. Viruses can be transmitted by animal to human or human to human, but prions are always human to human transmission. C. Prions are not destroyed by heat, but viruses can be inactivated by heat. D. Viruses do not contain protein, whereas prions do.
A year ago, Kurt lost 30 pounds quite rapidly by severely restricting his calories. Over the months following, he has regained 25 of those pounds. Kurt again cuts radically back on his calorie intake to lose the regained weight
This time, he is having more difficulty. What has happened to his body composition and his metabolism to create this difficulty?