The biologically available carbon that is produced within large, lentic rivers and lakes is called ________.
Fill in the blank(s) with the appropriate word(s).
autochthonous
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Type IV pili are involved in
A) attachment of cells to surfaces. B) twitching motility. C) pathogenesis. D) attachment to surfaces, twitching motility, and pathogenesis.
The increase in cytosolic calcium within the egg during fertilization initiates
A. the slow block to polyspermy. B. the cortical reaction. C. signaling for the first cell division. D. the release of enzymes by the egg. E. All of the choices are correct.
Avery, MacLeod, and McCarty showed that DNA was the transforming principle when they mixed
dead virulent bacteria and live avirulent bacteria after treating with a DNA degrading enzyme, injected this into mice, and observed that the mice survived. If RNA were the genetic material, what would have been the effect on the mice after treating with a DNA degrading enzyme and why?
What will be an ideal response?Which of the following statements about alcohol is false?
a. Alcohol abuse is responsible for more than 30% of all traffic fatalities. b. A typical 170lb male can reach the legal level of intoxication by consuming four drinks in one hour. c. Nearly one of every three high school students experiences negative consequences from alcohol use. d. Coffee can be used to counteract the drowsiness and depressive effects of alcohol consumption. e. Fetal alcohol syndrome is the leading cause of preventable mental retardation in the United States.