Which of the following human diseases is likely due to a mismatch between the environment humans evolved in for most of the species' existence, and our current environment?
A. asthma
B. cancer
C. celiac
D. Alzheimer's
Answer: A. asthma
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Match the following items with the correct phrases.
_______1. When two microorganisms occupying the same environmental niche have absolutely no effect upon each other, it is known as ____________________. _______2. Bacterial vaginosis is an example of ____________________. _______3. ____________________ is a symbiotic relationship of benefit to one of the symbionts, but neither beneficial nor harmful to the other. _______4. ____________________ is a symbiotic relationship of benefit to one of the symbionts, and detrimental to the other. _______5. A lichen is a classic example of ____________________. a. commensalism b. mutualism c. neutralism d. parasitism e. synergism
Steroid hormones can trigger gene expression in a select number of cells because ____
a. only target cells allow the steroid hormone to cross the plasma membrane b. nontarget cells have a steroid hormone response element encoded in their DNA c. only target cells have the correct receptor in their cytosol to bind to the hormone d. nontarget cells lack the genes found in target cells e. only target cells have the genes that steroid hormones activate
The rate of carbon dioxide production by Cyclocephala colasi beetles was used to measure their
A. rate of photosynthesis. B. level of activity. C. ability to pollinate flowers. D. rate of respiration. E. body temperature.
Which of the following is officially accepted as a sterilant and high-level disinfectant?
A. silver nitrate B. benzalkonium chloride C. cresol D. triclosan E. glutaraldehyde