Which of the following produces a greenish pigment that may appear in infected wounds?
A. E. coli
B. S. aureus
C. S. pyogenes
D. P. aeruginosa
D.
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What is the main reason for using food webs instead of food chains in analyzing ecosystems?
I) Most organisms eat more than one type of food. II) Most organisms feed at several trophic levels. III) The decomposition cycle needs to be shown. A) only I B) only II C) only III D) only I and II E) I, II, and III
Which causes the most stress to overloaded municipal wastewater plants?
A. Antibiotic resistant bacteria in the system B. Population growth associated with increased volume delivered to the plant C. Too many people who flush prescription drugs down the toilet D. Global warming
The waterproof cuticle covering the epidermis of land plants helps prevent dehydration, much like the skin of some land animals. As a consequence of having a cuticle, what other evolutionary adaptation was important for most land plants?
A. the endodermis in the root B. root hairs on the root epidermis C. collenchyma fibers just beneath the surface of the epidermis D. stomata in the leaves E. trichomes on leaf surfaces
The volume of air remaining in the lungs following a maximum expiration is called
A) residual volume. B) tidal volume. C) inspiratory reserve volume. D) inspiratory capacity. E) vital capacity.