El Niño and La Niña ____.

A. both decrease water temperatures in the eastern Pacific Ocean
B. both increase water temperatures in the eastern Pacific Ocean
C. both increase water temperatures in the Gulf of Mexico
D. cause more rain and less rain, respectively, in Australia
E. cause fewer hurricanes and more hurricanes, respectively, in the North Atlantic


Answer: E

Biology & Microbiology

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Some cancer cells produce the enzyme ________, which avoids stimulating apoptosis based on the number of cell divisions.

Fill in the blank(s) with the appropriate word(s).

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The disaccharide shown above is ____

a. lactose b. fructose c. maltose d. cellulose e. sucrose

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Which of the following statements is NOT true

about asteroids? a. They have had little influence on the history of life. b. They do not emit light and are difficult to see. c. Their impacts have produced craters visible in satellite images. d. One asteroid impacted our planet just prior to the mass extinctions at the K-T boundary. e. An asteroid impact releases an enormous quantity of energy.

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The first repair of mistakes during DNA replication is made by:

A: the mismatch repair system. B: excision repair. C: DNA polymerase. D: SOS repair. E: postreplication repair.

Biology & Microbiology