What is the primary difference between savannas and tropical forests?
A) Tropical forests are typically warmer.
B) Savannas have less precipitation.
C) Tropical forests have more variable temperatures.
D) There are no climate differences between the two.
B
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Which of the following is NOT true of enzyme
behavior? a. Enzyme shape may change during catalysis. b. The active site of an enzyme orients its substrate molecules, thereby promoting interaction of their reactive parts. c. All enzymes have an active site where substrates are temporarily bound. d. Each enzyme can catalyze a wide variety of different reactions. e. Enzyme activity is affected by pH and temperature.
Which scientist proposed adding a kingdom for protists?
A) Carolus Linnaeus B) Carl Woese C) Robert Whittaker D) Ernst Haeckel
The estimated effective population size for humans indicated there was a significant bottleneck in the patrilineally transmitted Y chromosome, but there was not a bottleneck revealed in the matrilineally transmitted X chromosome. What is the most likely reason for this?
What occurs during viral uncoating?
a. The capsid breaks apart, releasing the viral genome. b. The nucleic acid breaks apart, allowing for translation. c. The viral envelope is released. d. The viral proteins are synthesized.