The three main forms of nitrogenous wastes found in animals are
A. ammonia, urea, and uric acid
B. ammonia, urea, and uracil
C. ammonia, urea, and amino acids
D. uracil, urea, and uric acid
E. amino acids, uracil, and uric acid
A. ammonia, urea, and uric acid
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The Irish "elk" described by Georges Cuvier suggests that _____
A) organisms could not have originated by special creation B) organisms could go extinct C) the great flood or some other catastrophe caused the evolution of new species D) the Earth is old enough for evolution to have occurred
Antibiotics that are most likely to disrupt the normal microbiota are termed
A. narrow-spectrum. B. broad-spectrum. C. targeted spectrum. D. semi-synthetic.
The homeostatic interaction between the endocrine system and which other system is demonstrated by
aldosterone regulating salt-water balance? a. digestive system b. circulatory system c. reproductive system d. urinary system e. skeletal system
Cultures of a bacterial species were incubated on the shelf of a refrigerator, out on a lab bench top, on the shelf of a 37°C incubator and on the shelf of a 50°C incubator. After incubation, there was no growth at 37°C and 50°C, slight growth out on the bench top and abundant growth at refrigeration. What term could be used for this species?
A. Psychrophile B. Mesophile C. Halophile D. Capnophile E. Anaerobe