When humans breathe using only the mouth, which of the following is most diminished?
a. filtering
b. warming
c. moisturizing
d. texturizing
e. vocalizing
a
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Lions, leopards and other large terrestrial predators maintain well-defined territories. What kind of dispersion pattern would this produce?
A. clumped B. clustered C. uniform D. random E. logistic
Which system is considered a closed system?
a. a human b. a gas-powered automobile c. a single-celled organism d. a propane furnace e. the Earth
What are opsins and what are they a part of?
a. membrane lipids that form a complex with a retinal molecule at the centre b. membrane proteins that form a complex with a retinal molecule at the centre c. retinal molecules that form a complex with membrane proteins at the centre d. retinal molecules that form a complex with membrane lipids at the centre
Germ-free animals are often more susceptible to infections and serious disease than are animals with a typical complement of normal microbiota. Based on this observation, which of the following would be an appropriate conclusion?
A. Normal microbiota are incapable of causing disease B. Normal microbiota stimulate the development of the immune system C. Normal microbiota are parasitic D. Normal microbiota are opportunists E. Normal microbiota provide supplemental nutrition to the host