If an injection to the mouse contains live R strain and heat-killed S strain Streptococcus pneumonia, ____
a. the mouse will live
b. the mouse will became fatally ill and live S strain bacteria will be detected in its blood
c. the mouse's blood will contain live pathogenic R strain bacteria
d. the dead S strain bacteria will transform to live R strain bacteria
e. DNA from the live R strain bacteria will revive the dead S strain bacteria
ANSWER: b
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Creative destruction refers to the
A) withdrawal of investment from low profit areas and activities for reinvestment in high profit ones. B) conversion and remodeling of old, decaying buildings into modern art facilities. C) artistically destroying and knocking down old buildings and areas for new development. D) removal of materials from old facilities for use in new construction, to maintain links between old and new. E) bulldozing vacant houses in order to create agrarian areas.
The emergency contraceptive pill (ECP) works by
A. killing the embryo. B. changing the pH of the uterus. C. killing sperm. D. preventing ovulation.
The __________ controls normal body temperature; it is stimulated to reset the body to a higher temperature in response to some infections.
A) complement cascade B) lacrimal apparatus C) thyroid D) hypothalamus
A water molecule could move all the way through a plant from soil to root to leaf to air and pass through a living cell only once. This living cell would be a part of which structure?
A) a guard cell B) the root epidermis C) the endodermis D) the root cortex