Bacteria in the intestinal tract prevent
pathogens from causing disease by
a. crowding them out.
b. eating other bacteria.
c. producing protein traps to kill them.
d. submerging them in acid in the stomach.
e. doing all of these.
A
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Turgor pressure is observed when a plant cells environment is ________________.
A. hypoosmotic B. isosmotic C. osmosis D. hyperosmotic
According to studies by Norman Terry and coworkers, some plants can perform a version of
bioremediation of selenium in wastewater by
a. converting selenium to a form that kills waterfowl. b. using selenium to make a necessary supplement for humans. c. converting selenium into a relatively nontoxic gas. d. storing selenium in the soil. e. increasing the selenium concentration in the water.
During Krebs cycle reactions, the waste product gas ____________________ is produced. Fill in the blank(s) with the appropriate word(s)
The correspondence between homeotic genes of distantly related animals provides evidence of ________________.
Fill in the blank(s) with the appropriate word(s).