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

Biology & Microbiology

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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

Biology & Microbiology

Antibiotics that are most likely to disrupt the normal microbiota are termed

A. narrow-spectrum. B. broad-spectrum. C. targeted spectrum. D. semi-synthetic.

Biology & Microbiology

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

Biology & Microbiology

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

Biology & Microbiology