The kind of algae that help to build a coral reef are
What will be an ideal response?
coralline algae
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A college student spent the week hiking on the Appalachian Trail and then spends Friday night walking around New York City's Time Square. What was her ecological footprint during the week compared to Friday night?
A. Her ecological footprint was small in the natural environment and high in the manmade environment. B. Her ecological footprint was large in the natural environment (because she was the only human) and small in the man-made environment (because there are lots of humans). C. Her ecological footprint was the same in both environments because ecological footprints are only calculated over long (at least a year) periods of time for entire human populations. D. More information is needed about what resources the student used in both environments to determine her ecological footprint.
The interleukin-2 (IL-2) growth factor interacts with receptors on
A) embryonic cells. B) cytotoxic T lymphocytes. C) mesenchymal cells. D) smooth muscle cells. E) epithelial cells.
The following statements regarding INNATE immunity are true, EXCEPT
A. It is prepared to block the entry of microbes B. This type of host defense is always present in healthy individuals C. Rapidly eliminate microbes that succeed in entering host tissues D. It relies on antibody formation and cell-mediated immunity to achieve its functions
Which of the following would not result from a cholera infection?
A) organ failure and death B) pseudomembranous colitis C) mild to profuse diarrhea D) leg cramps E) hypovolemic shock