What is the correct rank order for relative toxicity (most to least) of the primary nitrogenous wastes generated by different animals?
A. ammonia ? uric acid ? urea
B. urea ? ammonia ? uric acid
C. ammonia ? urea ? uric acid
D. uric acid ? ammonia ? urea
E. urea ? uric acid ? ammonia
Answer: C
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A female who is heterozygous for hemophilia will
a. exhibit the condition throughout her life. b. suffer from bleeding when severely stressed. c. show no signs of the disease at all. d. pass the gene on to all of her children. e. pass the gene on to only her sons.
The process by which one species gives rise to multiple species that exploit different features of the environment is called ________
Fill in the blank(s) with correct word
Impetigo involves itching papules that break and form a very contagious yellow crust.
Answer the following statement true (T) or false (F)
Figure on Page 150
In this depiction of transcription (accompanying figure), the ____ strand is ____ because it ____.
A. upper; RNA; contains guanine B. upper; RNA; contains uracil C. lower; RNA; contains thymine D. upper; RNA; has no uracil E. lower; DNA; contains adenine